## Higgs Physics

This page contains public results from the ATLAS Higgs Working Group. The group is responsible for Standard Model and beyond the Standard Model Higgs boson physics.

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@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5582','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5582','shortTitle':'PR FCNC t Hq 8 TeV','fullTitle':'Search for flavour-changing neutral current top quark decays $t\\to Hq$ in $pp$ collisions at $\\sqrt{s}=8$ TeV with the ATLAS detector','pubShortTitle':'Search for flavour-changing neutral current top quark decays t->Hq at 8 TeV','refCode':'TOPQ-2014-14','abstract':'A search for flavour-changing neutral current decays of a top quark to an up-type quark ($q=u, c$) and the Standard Model Higgs boson, where the Higgs boson decays to $b\\bar{b}$, is presented. The analysis searches for top quark pair events in which one top quark decays to $Wb$, with the $W$ boson decaying leptonically, and the other top quark decays to $Hq$. The search is based on $pp$ collisions at $\\sqrt{s}=8$ TeV recorded in 2012 with the ATLAS detector at the CERN Large Hadron Collider and uses an integrated luminosity of 20.3 fb$^{-1}$. Data are analysed in the lepton-plus-jets final state, characterised by an isolated electron or muon and at least four jets. The search exploits the high multiplicity of $b$-quark jets characteristic of signal events, and employs a likelihood discriminant that uses the kinematic differences between the signal and the background, which is dominated by $t\\bar{t} \\to WbWb$ decays. No significant excess of events above the background expectation is found, and observed (expected) 95% CL upper limits of 0.56% (0.42%) and 0.61% (0.64%) are derived for the $t\\to Hc$ and $t\\to Hu$ branching ratios respectively. The combination of this search with other ATLAS searches in the $H \\to \\gamma\\gamma$ and $H\\to WW^*, \\tau\\tau$ decay modes significantly improves the sensitivity, yielding observed (expected) 95% CL upper limits on the $t\\to Hc$ and $t\\to Hu$ branching ratios of 0.46% (0.25%) and 0.45% (0.29%) respectively. The corresponding combined observed (expected) upper limits on the $|\\lambda_{tcH}|$ and $|\\lambda_{tuH}|$ couplings are 0.13 (0.10) and 0.13 (0.10) respectively. These are the most restrictive direct bounds on $tqH$ interactions measured so far.','cdsLink':'','journal':'JHEP','journalSub':'20-SEP-15','ecm':'8','luminosity':'20 fb-1','keywords':'1 lepton,Higgs to WW,Higgs to 2 photons,Top properties measurements,ttbar rare decays,EFT,MVA / machine learning,FCNC','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2014-14/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1509.06047@linkEnd@1509.06047@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1394161@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1007/JHEP12(2015)061@linkEnd@DOI@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1007/JHEP12(2015)061@linkEnd@JHEP 12 (2015) 061@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4742','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4742','shortTitle':'LPX - Multiphoton search 8 TeV','fullTitle':'Search for new phenomena in events with at least three photons collected in $pp$ collisions at $\\sqrt{s}$ = 8 TeV with the ATLAS detector','pubShortTitle':'Search for new phenomena with at least three photons','refCode':'EXOT-2013-24','abstract':'Results of a search for new phenomena in events with at least three photons are reported. Data from proton--proton collisions at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 20.3 fb$^{-1}$, were collected with the ATLAS detector at the LHC. The observed data are well described by the Standard Model. Limits at the 95% confidence level on new phenomena are presented based on the rate of events in an inclusive signal region and a restricted signal region targeting the rare decay $Z\\to 3\\gamma$, as well as di-photon and tri-photon resonance searches. For a Standard Model Higgs boson decaying to four photons via a pair of intermediate pseudoscalar particles ($a$), limits are found to be $\\sigma \\times {\\text {BR}}(h \\rightarrow aa) \\times {\\text {BR}}(a \\rightarrow \\gamma \\gamma)^{2} < 10^{-3} \\sigma_{\\text{SM}}$ for 10 GeV $< m_{a} <$ 62 GeV. Limits are also presented for Higgs boson-like scalars ($H$) for $m_{H} >$ 125 GeV, and for a $Z$ decaying to three photons via $Z \\rightarrow a+\\gamma \\rightarrow 3\\gamma$. Additionally, the observed limit on the branching ratio of the $Z$ boson decay to three photons is found to be BR$(Z \\rightarrow 3\\gamma) < 2.2 \\times 10^{-6}$, a result five times stronger than the previous result from LEP.','cdsLink':'','journal':'EPJC','journalSub':'16-SEP-15','ecm':'8','luminosity':'20.3 fb-1','keywords':'8 TeV,Exotic Higgs decays,BSM Higgs searches,BSM resonance,Rare decays,BSM search,Photons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2013-24/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1509.05051@linkEnd@1509.05051@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1393757@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1140/epjc/s10052-016-4034-8@linkEnd@DOI:10.1140/epjc/s10052-016-4034-8@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1140/epjc/s10052-016-4034-8@linkEnd@Eur. Phys. J. C 76 (2016) 210@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4783','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4783','shortTitle':'HSG6 Higgs to HH Channels','fullTitle':'Searches for Higgs boson pair production in the $HH\\to bb\\tau\\tau, \\gamma\\gamma WW*, \\gamma\\gamma bb, bbbb$ channels with the ATLAS detector','pubShortTitle':'Search BSM HH->bb gamma gamma, bb bb, bb tautau, gamma gamma WW','refCode':'HIGG-2013-33','abstract':'Searches for both resonant and non-resonant Higgs boson pair production are performed in the $hh\\to bb\\tau\\tau, \\gamma\\gamma WW^*$ final states using 20.3 fb$^{-1}$ of $pp$ collision data at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the Large Hadron Collider. No evidence of their production is observed and 95% confidence level upper limits on the production cross sections are set. These results are then combined with the published results of the $hh\\to \\gamma\\gamma bb, bbbb$ analyses. An upper limit of 0.69 (0.47) pb on the non-resonant Standard Model like $hh$ production is observed (expected), corresponding to 70 (48) times of the SM $gg\\to hh$ cross section. For production via narrow resonances, cross section limits of $hh$ production from a heavy Higgs boson decay are set as a function of the heavy Higgs boson mass. The observed (expected) limits range from 2.1 (1.1) pb at 260 GeV to 0.011 (0.018) pb at 1000 GeV. These results are interpreted in the context of two simplified scenarios of the Minimal Supersymmetric Standard Model.','cdsLink':'','journal':'PRD','journalSub':'15-SEP-15','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,BSM Higgs searches,Di-Higgs production,Statistical combination,Di-Higgs,Di-photon,WW,b-jets,Photons,Taus,1 lepton,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-33/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1509.04670@linkEnd@1509.04670@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1393493@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1103/PhysRevD.92.092004@linkEnd@DOI:10.1103/PhysRevD.92.092004@descriptionEnd@-,-@linkBegin@https://journals.aps.org/prd/abstract/10.1103/PhysRevD.92.092004@linkEnd@Phys. Rev. D 92, 092004 (2015)@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'6244','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=6244','shortTitle':'HSG6 HSG7 BSM coupling interpretation','fullTitle':'Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector','pubShortTitle':'Search HBSM H/A constraints from combined H(125) measurements and invisible decays','refCode':'HIGG-2015-03','abstract':'The ATLAS experiment at the LHC has measured the Higgs boson couplings and mass, and searched for invisible Higgs boson decays, using multiple production and decay channels with up to 4.7 fb$^{-1}$ of $pp$ collision data at $\\sqrt{s}= 7$ TeV and 20.3 fb$^{-1}$ at $\\sqrt{s}=8$ TeV. In the current study, the measured production and decay rates of the observed Higgs boson in the $\\gamma\\gamma$, $ZZ$, $WW$, $Z\\gamma$, $bb$, $\\tau\\tau$, and $\\mu\\mu$ decay channels, along with results from the associated production of a Higgs boson with a top-quark pair, are used to probe the scaling of the couplings with mass. Limits are set on parameters in extensions of the Standard Model including a composite Higgs boson, an additional electroweak singlet, and two-Higgs-doublet models. Together with the measured mass of the scalar Higgs boson in the $\\gamma\\gamma$ and $ZZ$ decay modes, a lower limit is set on the pseudoscalar Higgs boson mass of $m_{A}>370$ GeV in the hMSSM simplified Minimal Supersymmetric Standard Model. Results from direct searches for heavy Higgs bosons are also interpreted in the hMSSM. Direct searches for invisible Higgs boson decays in the vector-boson fusion and associated production of a Higgs boson with $W/Z$ ($Z\\to ll$, $W/Z \\to jj$) modes are statistically combined to set an upper limit on the Higgs boson invisible branching ratio of 0.25. The use of the measured visible decay rates in a more general coupling fit improves the upper limit to 0.23, constraining a Higgs portal model of dark matter.','cdsLink':'','journal':'JHEP','journalSub':'02-SEP-15','ecm':'7, 8','luminosity':'4.7 fb-1, 20.3 fb-1','keywords':'7 TeV,Exotic Higgs decays,BSM Higgs searches,Higgs to invisible,BSM reinterpretation,Statistical combination,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2015-03/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1509.00672@linkEnd@1509.00672@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1391509@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1007/JHEP11(2015)206@linkEnd@DOI:10.1007/JHEP11(2015)206@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1007/JHEP11(2015)206@linkEnd@JHEP 11 (2015) 206@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4628','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4628','shortTitle':'HSG3 HSG6 Heavy Higgs Search','fullTitle':'Search for a high-mass Higgs boson decaying to a $W$ boson pair in $pp$ collisions at $\\sqrt{s } = 8$ TeV with the ATLAS detector','pubShortTitle':'Search BSM H/X-> W W','refCode':'HIGG-2013-19','abstract':'A search for a high-mass Higgs boson $H$ is performed in the $H\\to WW\\to\\ell\\nu\\ell\\nu$ and $H\\to WW\\to \\ell\\nu{qq}$ decay channels using $pp$ collision data corresponding to an integrated luminosity of 20.3 fb$^{-1}$ collected at $\\sqrt{s}=$ 8 TeV by the ATLAS detector at the Large Hadron Collider. No evidence of a high-mass Higgs boson is found. Limits on $\\sigma_H\\times \\mathrm{BR}(H\\to WW)$ as a function of the Higgs boson mass $m_H$ are determined in three different scenarios: one in which the heavy Higgs boson has a narrow width compared to the experimental resolution, one for a width increasing with the boson mass and modeled by the complex-pole scheme following the same behavior as in the Standard Model, and one for intermediate widths. The upper range of the search is $m_H=1500$ GeV for the narrow-width scenario and $m_H=1000$ GeV for the other two scenarios. The lower edge of the search range is $200$--$300$ GeV and depends on the analysis channel and search scenario. For each signal interpretation, individual and combined limits from the two $WW$ decay channels are presented. At $m_{H } = 1500$ GeV, the highest-mass point tested, $\\sigma_H\\times\\mathrm{BR}(H\\rightarrow WW)$ for a narrow-width Higgs boson is constrained to be less than 21 fb and 6.0 fb at 95% CL for the gluon fusion and vector-boson fusion production modes, respectively.','cdsLink':'','journal':'JHEP','journalSub':'01-SEP-15','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,BSM Higgs searches,Higgs to WW,WW,2 jets,2 leptons,1 lepton,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-19/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1509.00389@linkEnd@1509.00389@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1391323@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1007/JHEP01(2016)032@linkEnd@DOI@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1007/JHEP01(2016)032@linkEnd@JHEP 01 (2016) 032@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4626','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4626','shortTitle':'HSG3 VBF Higgs invisible decay','fullTitle':'Search for invisible decays of a Higgs boson using vector-boson fusion in $pp$ collisions at $\\sqrt{s}=8$ TeV with the ATLAS detector','pubShortTitle':'Search BSM VBF H(125)->invisible','refCode':'HIGG-2013-16','abstract':'A search for a Higgs boson produced via vector-boson fusion and decaying into invisible particles is presented, using 20.3 fb$^{-1}$ of proton--proton collision data at a centre-of-mass energy of 8 TeV recorded by the ATLAS detector at the LHC. For a Higgs boson with a mass of 125 GeV, assuming the Standard Model production cross section, an upper bound of 0.28 is set on the branching fraction of $H\\to$ invisible at 95% confidence level, where the expected upper limit is 0.31. The results are interpreted in models of Higgs-portal dark matter where the branching fraction limit is converted into upper bounds on the dark-matter--nucleon scattering cross section as a function of the dark-matter particle mass, and compared to results from the direct dark-matter detection experiments.','cdsLink':'','journal':'JHEP','journalSub':'31-AUG-15','ecm':'8','luminosity':'20.3 fb-1','keywords':'8 TeV,Exotic Higgs decays,Dark sector,VBF production,Higgs to invisible,BSM search,VBF,Higgs,MET,2 jets','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-16/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1508.07869@linkEnd@1508.07869@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1391149@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1007/JHEP01(2016)172@linkEnd@DOI@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1007/JHEP01(2016)172@linkEnd@JHEP 01 (2016) 172@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5462','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5462','shortTitle':'HSG4 Lepton Flavour Violation','fullTitle':'Search for lepton--flavour--violating $H\\to\\mu\\tau$ decays of the Higgs boson with the ATLAS detector','pubShortTitle':'Search BSM H(125)->tau mu lepton flavor violating decay','refCode':'HIGG-2014-08','abstract':'A direct search for lepton--flavour--violating (LFV) $H\\to\\mu\\tau$ decays of the recently discovered Higgs boson with the ATLAS detector at the LHC is presented. The analysis is performed in the $H\\to\\mu\\tau_{\\mathrm{had}}$ channel, where $\\tau_{\\mathrm{had}}$ is a hadronically decaying $\\tau$--lepton. The search is based on the data sample of proton--proton collisions collected by the ATLAS experiment corresponding to an integrated luminosity of 20.3~fb$^{-1}$ at a centre--of--mass energy of $\\sqrt{s}=8$ TeV. No statistically significant excess of data over the predicted background is observed. The observed (expected) 95% confidence--level upper limit on the branching fraction, Br($H\\to\\mu\\tau$), is 1.85% (1.24%).','cdsLink':'','journal':'JHEP','journalSub':'13-AUG-15','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,Exotic Higgs decays,BSM resonance,LFV,Taus,1 lepton','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-08/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1508.03372@linkEnd@1508.03372@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1388016@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://doi.org/10.1007/JHEP11(2015)211@linkEnd@DOI:10.1007/JHEP11(2015)211@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1007/JHEP11(2015)211@linkEnd@JHEP11(2015)211@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'6243','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=6243','shortTitle':'HSG1 HEFT','fullTitle':'Constraints on non-Standard Model Higgs boson interactions in an effective field theory using differential cross sections measured in the $H \\rightarrow \\gamma\\gamma$ decay channel at $\\sqrt{s } = 8$ TeV with the ATLAS detector','pubShortTitle':'Studies on H(125) effective BSM interactions using H(125) -> gamma gamma differential cross sections','refCode':'HIGG-2015-02','abstract':'The strength and tensor structure of the Higgs bosons interactions are investigated within an effective field theory framework, which allows new CP-even and CP-odd interactions that can lead to changes in the kinematic properties of the Higgs boson and associated jet spectra. The parameters of the effective field theory are probed using a fit to five differential cross sections previously measured by the ATLAS experiment in the $H \\rightarrow \\gamma\\gamma$ decay channel with an integrated luminosity of 20.3 fb$^{-1}$ at $\\sqrt{s}=8$ TeV. In order to perform a simultaneous fit to the five distributions, the statistical correlations between them are determined by re-analysing the $H \\rightarrow \\gamma\\gamma$ candidate events in the proton-proton collision data. No significant deviations from the Standard Model are observed and limits on the effective field theory parameters are derived. The statistical correlations are made publicly available to allow for future analysis of theories with non-Standard Model interactions.','cdsLink':'','journal':'PLB','journalSub':'11-AUG-15','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,Higgs to 2 photons,EFT,BSM reinterpretation,Cross-section measurement','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2015-02/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1508.02507@linkEnd@1508.02507@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1387509@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1016/j.physletb.2015.11.071@linkEnd@DOI:10.1016/j.physletb.2015.11.071@descriptionEnd@-,-@linkBegin@https://www.sciencedirect.com/science/article/pii/S0370269315009272@linkEnd@Physics Letters B 753 (2016) 69-85@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4629','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4629','shortTitle':'HSG2 High Mass Search','fullTitle':'Search for an additional, heavy Higgs boson in the $H\\rightarrow ZZ$ decay channel at $\\sqrt{s}$ = 8 TeV in $pp$ collision data with the ATLAS detector','pubShortTitle':'Search BSM H -> ZZ','refCode':'HIGG-2013-20','abstract':'A search is presented for a high-mass Higgs boson in the $H\\rightarrow\\ell\\ell\\ell\\ell$, $H\\rightarrow\\ell\\ell\\nu\\nu$, $H\\rightarrow\\ell\\ell qq$, and $H\\rightarrow\\nu\\nu qq$ decay modes using the ATLAS detector at the CERN Large Hadron Collider. The search uses proton-proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb$^{-1}$. The results of the search are interpreted in the scenario of a heavy Higgs boson with a width that is small compared with the experimental mass resolution. The Higgs boson mass range considered extends up to 1 TeV for all four decay modes and down to as low as 140 GeV, depending on the decay mode. No significant excess of events over the Standard Model prediction is found. A simultaneous fit to the four decay modes yields upper limits on the production cross-section of a heavy Higgs boson times the branching ratio to Z boson pairs. 95% confidence level upper limits range from 0.53 pb at $m_H=195$ GeV to 0.008 pb at $m_H=950$ GeV for the gluon-fusion production mode and from 0.31 pb at $m_H=195$ GeV to 0.009 pb at $m_H=950$ GeV for the vector-boson-fusion production mode. The results are also interpreted in the context of Type-I and Type-II two-Higgs-doublet models.','cdsLink':'','journal':'EPJC','journalSub':'21-JUL-15','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,BSM Higgs searches,VBF production,Gluon fusion production,Higgs to ZZ,Higgs to 4 lepton,BSM search,VBF,Gluon fusion,Higgs,ZZ,MET,2 jets,>=3 leptons,2 leptons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-20/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1507.05930@linkEnd@1507.05930@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1384120@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1140/epjc/s10052-015-3820-z@linkEnd@DOI:10.1140/epjc/s10052-015-3820-z@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1140/epjc/s10052-015-3820-z@linkEnd@Eur. Phys. J. C76 (2016) 45@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5364','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5364','shortTitle':'HSG7 Couplings Combination','fullTitle':'Measurements of the Higgs boson production and decay rates and coupling strengths using $pp$ collision data at $\\sqrt{s}= 7$ and $8$!TeV in the ATLAS experiment','pubShortTitle':'H(125) combination cross-sections, couplings','refCode':'HIGG-2014-06','abstract':'Combined analyses of the Higgs boson production and decay rates as well as its coupling strengths to vector bosons and fermions are presented. The combinations include the results of the analyses of the $H\\to\\gamma\\gamma,\\, ZZ^*,\\, WW^*,\\, Z\\gamma,\\, b\\bar{b},\\, \\tau\\tau$ and $\\mu\\mu$ decay modes, and the constraints on the associated production with a pair of top quarks and on the off-shell coupling strengths of the Higgs boson. The results are based on the LHC proton--proton collision datasets, with integrated luminosities of up to 4.7 fb$^{-1}$ at $\\sqrt{s}= 7$ TeV and 20.3 fb$^{-1}$ at $\\sqrt{s}=8$ TeV, recorded by the ATLAS detector in 2011 and 2012. Combining all production modes and decay channels, the measured signal yield, normalised to the Standard Model expectation, is $1.18^{+0.15}_{-0.14}$. The data provide unequivocal confirmation of the gluon fusion production of the Higgs boson, strong evidence of vector-boson fusion production and support Standard Model assumptions of production in association with vector bosons or a pair of top quarks. The observed Higgs boson production and decay rates are interpreted in a leading-order coupling framework, exploring a wide range of benchmark coupling models both with and without assumptions on the Higgs boson width and on the Standard Model particle content in loop processes. Generic Higgs boson coupling models that allow measurement of coupling strengths to $\\mu,\\,\\tau$ leptons, $b,\\,t$ quarks and $W,\\,Z$ bosons, or ratios of these coupling strengths, are presented. The observed data are found to be compatible with the Standard Model expectations for a Higgs boson at a mass of 125.36 GeV for all models considered.','cdsLink':'','journal':'EPJC','journalSub':'16-JUL-15','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,kappa,Coupling measurements,Statistical combination,Cross-section measurement,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-06/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1507.04548@linkEnd@1507.04548@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1383128@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1140/epjc/s10052-015-3769-y@linkEnd@DOI:10.1140/epjc/s10052-015-3769-y@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1140/epjc/s10052-015-3769-y@linkEnd@Eur. Phys. J. C (2016) 76:6@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4625','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4625','shortTitle':'HSG3 Main Associated Production','fullTitle':'Study of $(W/Z)H$ production and Higgs boson couplings using $H \\rightarrow WW^{\\ast}$ decays with the ATLAS detector','pubShortTitle':'VH(125) H-> WW','refCode':'HIGG-2013-15','abstract':'A search for Higgs boson production in association with a $W$ or $Z$ boson, in the $H \\rightarrow WW^{\\ast}$ decay channel, is performed with a data sample collected with the ATLAS detector at the LHC in proton-proton collisions at centre-of-mass energies $\\sqrt{s}= 7$ TeV and 8 TeV, corresponding to integrated luminosities of 4.5 ${\\rm fb}^{-1}$ and 20.3 ${\\rm fb}^{-1}$, respectively. The $WH$ production mode is studied in two-lepton and three-lepton final states, while two-lepton and four-lepton final states are used to search for the $ZH$ production mode. The observed significance, for the combined $WH$ and $ZH$ production, is 2.5 standard deviations while a significance of 0.9 standard deviations is expected in the Standard Model Higgs boson hypothesis. The ratio of the combined $WH$ and $ZH$ signal yield to the Standard Model expectation, $\\mu_{VH}$, is found to be $\\mu_{VH } = 3.0^{+1.3}_{-1.1}{\\, {(\\rm stat.)}}^{+1.0}_{-0.7}{\\,{(\\rm sys.)}}$ for the Higgs boson mass of 125.36 GeV. The $WH$ and $ZH$ production modes are also combined with the gluon fusion and vector boson fusion production modes studied in the $H \\to WW^* \\to \\ell \\nu \\ell \\nu$ decay channel, resulting in an overall observed significance of 6.5 standard deviations and $\\mu_{\\rm ggF+VBF+VH } = 1.16^{+0.16}_{-0.15} {\\rm (stat.)}^{+0.18}_{-0.15} {\\rm (sys.)}$. The results are interpreted in terms of scaling factors of the Higgs boson couplings to vector bosons ($k_V$) and fermions ($k_F$); the combined results are: $|\\kappa_V| = 1.06^{+0.10}_{-0.10}$, $|\\kappa_F| = 0.85^{+0.26}_{-0.20}$.','cdsLink':'','journal':'JHEP','journalSub':'22-JUN-15','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,Coupling measurements,H(125) measurements,VH,WW,>=3 leptons,2 leptons,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-15/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1506.06641@linkEnd@1506.06641@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1377364@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1007/JHEP08(2015)137@linkEnd@DOI@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1007/JHEP08(2015)137@linkEnd@JHEP08 (2015) 137@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4703','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4703','shortTitle':'HSG8 ttH Multileptons','fullTitle':'Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector','pubShortTitle':'ttH(125) to multilepton final states (WW, ZZ, tau tau)','refCode':'HIGG-2013-26','abstract':'A search for the associated production of the Higgs boson with a top quark pair is performed in multilepton final states using 20.3 fb$^{-1}$ of proton-proton collision data recorded by the ATLAS experiment at $\\sqrt{s}=8$ TeV at the Large Hadron Collider. Five final states, targeting the decays $H\\to WW^*$, $\\tau\\tau$, and $ZZ^*$, are examined for the presence of the Standard Model (SM) Higgs boson: two same-charge light leptons ($e$ or $\\mu$) without a hadronically decaying $\\tau$ lepton; three light leptons; two same-charge light leptons with a hadronically decaying $\\tau$ lepton; four light leptons; and one light lepton and two hadronically decaying $\\tau$ leptons. No significant excess of events is observed above the background expectation. The best fit for the $t\\bar t H$ production cross section, assuming a Higgs boson mass of 125 GeV, is $2.1 ^{+1.4}_{-1.2}$ times the SM expectation, and the observed (expected) upper limit at the 95% confidence level is 4.7 (2.4) times the SM rate. The $p$-value for compatibility with the background-only hypothesis is $1.8\\sigma$; the expectation in the presence of a Standard Model signal is $0.9\\sigma$.','cdsLink':'','journal':'PLB','journalSub':'19-JUN-15','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,Coupling measurements,H(125) measurements,ttH production,Higgs to tautau,Higgs to WW,Higgs to ZZ,Top pair,b-jets,>=3 leptons,2 leptons (same charge),8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-26/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1506.05988@linkEnd@1506.05988@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1377202@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1016/j.physletb.2015.07.079@linkEnd@DOI:10.1016/j.physletb.2015.07.079@descriptionEnd@-,-@linkBegin@https://www.sciencedirect.com/science/article/pii/S0370269315005997@linkEnd@Physics Letters B 749 (2015) 519-541@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4627','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4627','shortTitle':'HSG1 HSG2 HSG3 HSG7 Spin/CP','fullTitle':'Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector','pubShortTitle':'H(125) spin/CP H-> WW, ZZ, gamma gamma','refCode':'HIGG-2013-17','abstract':'Studies of the spin, parity and tensor couplings of the Higgs boson in the $H\\rightarrow ZZ^*\\rightarrow 4\\ell$ , $H\\rightarrow WW^* \\rightarrow e\\nu\\mu\\nu$ and $H\\rightarrow \\gamma \\gamma$ decay processes at the LHC are presented. The investigations are based on $25$ fb$^{-1}$ of $pp$ collision data collected by the ATLAS experiment at $\\sqrt{ s } = 7$ TeV and $\\sqrt{ s }= 8$ TeV. The Standard Model (SM) Higgs boson hypothesis, corresponding to the quantum numbers $J ^P=0^+$, is tested against several alternative spin scenarios, including non-SM spin-0 and spin-2 models with universal and non-universal couplings to fermions and vector bosons. All tested alternative models are excluded in favour of the SM Higgs boson hypothesis at more than 99.9% confidence level. Using the $H\\rightarrow ZZ^*\\rightarrow 4\\ell$ and $H\\rightarrow WW^* \\rightarrow e\\nu\\mu\\nu$ decays, the tensor structure of the $HVV$ interaction in the spin-0 hypothesis is also investigated. The observed distributions of variables sensitive to the non-SM tensor couplings are compatible with the SM predictions and constraints on the non-SM couplings are derived.','cdsLink':'','journal':'EPJC','journalSub':'18-JUN-15','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,Spin / CP,H(125) measurements,Higgs to WW,Higgs to ZZ,Higgs to 2 photons,Statistical combination,Higgs,Di-photon,ZZ,WW,Photons,>=3 leptons,2 leptons,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-17/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1506.05669@linkEnd@1506.05669@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1376946@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1140/epjc/s10052-015-3685-1@linkEnd@DOI:10.1140/epjc/s10052-015-3685-1@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1140/epjc/s10052-015-3685-1@linkEnd@Eur. Phys. J. C75 (2015) 476@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5622','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5622','shortTitle':'HSG4 and TauCP Embedding','fullTitle':'Modelling $Z\\to\\tau\\tau$ processes in ATLAS with $\\tau$-embedded $Z\\to\\mu\\mu$ data','pubShortTitle':'Studies on Z -> tau tau modeling with embedding techniques from Z -> mu mu','refCode':'HIGG-2014-09','abstract':'This paper describes the concept, technical realisation and validation of a largely data-driven method to model events with $Z\\to\\tau\\tau$ decays. In $Z\\to\\mu\\mu$ events selected from proton-proton collision data recorded at $\\sqrt{s}=8$ TeV with the ATLAS experiment at the LHC in 2012, the $Z$ decay muons are replaced by $\\tau$ leptons from simulated $Z\\to\\tau\\tau$ decays at the level of reconstructed tracks and calorimeter cells. The $\\tau$ lepton kinematics are derived from the kinematics of the original muons. Thus, only the well-understood decays of the $Z$ boson and $\\tau$ leptons as well as the detector response to the $\\tau$ decay products are obtained from simulation. All other aspects of the event, such as the $Z$ boson and jet kinematics as well as effects from multiple interactions, are given by the actual data. This so-called $\\tau$-embedding method is particularly relevant for Higgs boson searches and analyses in $\\tau\\tau$ final states, where $Z\\to\\tau\\tau$ decays constitute a large irreducible background that cannot be obtained directly from data control samples.','cdsLink':'','journal':'JINST','journalSub':'18-JUN-15','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,Z,Taus,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-09/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1506.05623@linkEnd@1506.05623@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1376944@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://iopscience.iop.org/article/10.1088/1748-0221/10/09/P09018/@linkEnd@2015 JINST 10 P09018@descriptionEnd@-,-@linkBegin@https://dx.doi.org/10.1088/1748-0221/10/09/P09018@linkEnd@DOI:10.1088/1748-0221/10/09/P09018@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5363','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5363','shortTitle':'HSG1 HSG6 DM and Higgs diphoton MET','fullTitle':'Search for Dark Matter in Events with Missing Transverse Momentum and a Higgs Boson Decaying to Two Photons in $pp$ Collisions at $\\sqrt{s}=8$ TeV with the ATLAS Detector','pubShortTitle':'Search BSM H(125)->gamma gamma + missing-ET','refCode':'HIGG-2014-05','abstract':'Results of a search for new phenomena in events with large missing transverse momentum and a Higgs boson decaying to two photons are reported. Data from proton--proton collisions at a center-of-mass energy of 8 TeV and corresponding to an integrated luminosity of 20.3 fb$^{-1}$ have been collected with the ATLAS detector at the LHC. The observed data are well described by the expected Standard Model backgrounds. Upper limits on the cross section of events with large missing transverse momentum and a Higgs boson candidate are also placed. Exclusion limits are presented for models of physics beyond the Standard Model featuring dark-matter candidates.','cdsLink':'','journal':'PRL','journalSub':'02-JUN-15','ecm':'8','luminosity':'20.3 fb-1','keywords':'7 TeV,Simplified DM model,BSM Higgs searches,Higgs to 2 photons,Dark matter,Di-photon,MET,Photons,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-05/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1506.01081@linkEnd@1506.01081@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1374488@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1103/PhysRevLett.115.131801@linkEnd@DOI:10.1103/PhysRevLett.115.131801@descriptionEnd@-,-@linkBegin@https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.115.131801@linkEnd@Phys. Rev. Lett. 115 (2015) 131801@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5562','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5562','shortTitle':'JTX - Diboson to 4b','fullTitle':'Search for Higgs boson pair production in the $b\\bar{b} b\\bar{b}$ final state from $pp$ collisions at $\\sqrt{s } = 8$ TeV with the ATLAS detector','pubShortTitle':'Search for HH to bbbb','refCode':'EXOT-2014-11','abstract':'A search for Higgs boson pair production $pp \\to hh$ is performed with 19.5 fb$^{-1}$ of proton--proton collision data at $\\sqrt{s}=$ 8 TeV, which were recorded by the ATLAS detector at the Large Hadron Collider in 2012. The decay products of each Higgs boson are reconstructed as a high-momentum $b\\bar{b}$ system with either a pair of small-radius jets or a single large-radius jet, the latter exploiting jet substructure techniques and associated $b$-tagged track-jets. No evidence for resonant or non-resonant Higgs boson pair production is observed. The data are interpreted in the context of the Randall--Sundrum model with a warped extra dimension as well as the two-Higgs-doublet model. An upper limit on the cross-section for $pp \\to G^{*}_{\\mathrm{KK}} \\to hh \\to b\\bar{b} b\\bar{b}$ of 3.2 (2.3) fb is set for a Kaluza--Klein graviton $G^{*}_{\\mathrm{KK}}$ mass of 1.0 (1.5) TeV, at the 95\\% confidence level. The search for non-resonant Standard Model $hh$ production sets an observed 95\\% confidence level upper limit on the production cross-section $\\sigma(pp \\to hh \\to b\\bar{b}b\\bar{b})$ of 202 fb, compared to a SM prediction of $\\sigma(pp \\to hh \\to b\\bar{b}b\\bar{b}) = 3.6 \\pm 0.5$ fb.','cdsLink':'','journal':'EPJC','journalSub':'31-MAY-15','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,Exotic Higgs production,Strong gravity,Di-Higgs production,BSM search,Di-Higgs,Boosted,b-jets,>=3 leptons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2014-11/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1506.00285@linkEnd@1506.00285@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1373912@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1140/epjc/s10052-015-3628-x@linkEnd@DOI:10.1140/epjc/s10052-015-3628-x@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1140/epjc/s10052-015-3628-x@linkEnd@Eur. Phys. J. C (2015) 75:412@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4342','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4342','shortTitle':'DBL - H to ZZd/ZdZd to 4 lepton','fullTitle':'Search for new light gauge bosons in Higgs boson decays to four-lepton final states in $pp$ collisions at $\\sqrt{s}=8$ TeV with the ATLAS detector at the LHC','pubShortTitle':'H to ZdarkZdark or ZZdark search in the llll final state','refCode':'EXOT-2013-15','abstract':'This paper presents a search for Higgs bosons decaying to four leptons, either electrons or muons, via one or two light exotic gauge bosons $Z_d$, $H\\to Z Z_d \\to 4\\ell$ or $H\\to Z_d Z_d \\to 4\\ell$. The search was performed using $pp$ collision data corresponding to an integrated luminosity of about 20 fb$^{-1}$ at the center-of-mass energy of $\\sqrt{s}=8$TeV recorded with the ATLAS detector at the Large Hadron Collider. The observed data are well described by the Standard Model prediction. Upper bounds on the branching ratio of $H\\to Z Z_d \\to 4\\ell$ and on the kinetic mixing parameter between the $Z_d$ and the Standard Model hypercharge gauge boson are set in the range $(1$--$9)\\times10^{-5}$ and $(4$--$17)\\times10^{-2}$ respectively, at 95% confidence level assuming the Standard Model branching ratio of $H\\to Z Z^* \\to 4\\ell$, for $Z_d$ masses between 15 and 55 GeV. Upper bounds on the effective mass mixing parameter between the $Z$ and the $Z_d$ are also set using the branching ratio limits in the $H \\to ZZ_d\\to 4\\ell$ search, and are in the range $(1.5$--$8.7)\\times 10^{-4}$ for $15<m_{Z_d} < 35$ GeV. Upper bounds on the branching ratio of $H\\rightarrow Z_dZ_d \\to 4\\ell$ and on Higgs portal coupling parameter, controlling the strength of the coupling of the Higgs boson to dark vector bosons, are set in the range $(2$--$3)\\times10^{-5}$ and $(1$--$10)\\times 10^{-4}$ respectively, at 95 % confidence level assuming the Standard Model Higgs boson production cross sections, for $Z_d$ masses between 15 and 60 GeV.','cdsLink':'','journal':'PRD','journalSub':'28-MAY-15','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,Exotic Higgs decays,Dark sector,BSM search,>=3 leptons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2013-15/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1505.07645@linkEnd@1505.07645@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1373520@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1103/PhysRevD.92.092001@linkEnd@DOI@descriptionEnd@-,-@linkBegin@https://journals.aps.org/prd/abstract/10.1103/PhysRevD.92.092001@linkEnd@Phys. Rev. D 92 (2015) 092001@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5182','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5182','shortTitle':'HSG6 h to 2a to tautau mumu','fullTitle':'Search for Higgs bosons decaying to aa in the mumutautau final-state in pp collisions at sqrt(s) = 8 TeV with the ATLAS experiment','pubShortTitle':'Search BSM H->2a->tau tau mu mu','refCode':'HIGG-2014-02','abstract':'A search for the decay to a pair of new particles of either the 125 GeV Higgs boson ($h$) or a second CP-even Higgs boson ($H$) is presented. The dataset correspods to an integrated luminosity of 20.3 fb$^{-1}$ of $pp$ collisions at $\\sqrt{s}=$ 8 TeV recorded by the ATLAS experiment at the LHC in 2012. The search was done in the context of the next-to-minimal supersymmetric standard model, in which the new particles are the lightest neutral pseudoscalar Higgs bosons ($a$). One of the two $a$ bosons is required to decay to two muons while the other is required to decay to two $\\tau$-leptons. No significant excess is observed above the expected backgrounds in the dimuon invariant mass range from 3.7 GeV to 50 GeV. Upper limits are placed on the production of $h\\rightarrow{aa}$ relative to the Standard Model $gg\\rightarrow{h}$ production, assuming no coupling of the $a$ boson to quarks. The most stringent limit is placed at 3.5% for $m_a =$ 3.75 GeV. Upper limits are also placed on the production cross section of $H\\rightarrow{aa}$ from 2.33 pb to 0.72 pb, for fixed $m_a$ = 5 GeV with $m_H$ ranging from 100 GeV to 500 GeV.','cdsLink':'','journal':'PRD','journalSub':'07-MAY-15','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,NMSSM,Exotic Higgs decays,Taus,2 leptons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-02/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1505.01609@linkEnd@1505.01609@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1367302@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1103/PhysRevD.92.052002@linkEnd@DOI:10.1103/PhysRevD.92.052002@descriptionEnd@-,-@linkBegin@https://journals.aps.org/prd/abstract/10.1103/PhysRevD.92.052002@linkEnd@Phys. Rev. D92 (2015) 052002@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5723','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5723','shortTitle':'HSG7 Diff cross section combination','fullTitle':'Measurements of the Total and Differential Higgs Boson Production Cross Sections Combining the $H \\rightarrow \\gamma \\gamma$ and $H \\rightarrow ZZ ^{*}\\rightarrow 4\\ell$ Decay Channels at $\\sqrt{s}=8$ TeV with the ATLAS Detector','pubShortTitle':'H(125) combination differential cross-sections (gamma gamma and 4l)','refCode':'HIGG-2014-11','abstract':'Measurements of the total and differential cross sections of Higgs boson production are performed using 20.3~fb$^{-1}$ of $pp$ collisions produced by the Large Hadron Collider at a center-of-mass energy of $\\sqrt{s } = 8$ TeV and recorded by the ATLAS detector. Cross sections are obtained from measured $H \\rightarrow \\gamma \\gamma$ and $H \\rightarrow ZZ ^{*}\\rightarrow 4\\ell$ event yields, which are combined accounting for detector efficiencies, fiducial acceptances and branching fractions. Differential cross sections are reported as a function of Higgs boson transverse momentum, Higgs boson rapidity, number of jets in the event, and transverse momentum of the leading jet. The total production cross section is determined to be $\\sigma_{pp \\to H } = 33.0 \\pm 5.3 \\, ({\\rm stat}) \\pm 1.6 \\, ({\\rm sys}) \\mathrm{pb}$. The measurements are compared to state-of-the-art predictions.','cdsLink':'','journal':'PRL','journalSub':'21-APR-15','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,Higgs to ZZ,Higgs to 4 lepton,Higgs to 2 photons,Statistical combination,Differential measurement,Cross-section measurement','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-11/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1504.05833@linkEnd@1504.05833@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1364361@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1103/PhysRevLett.115.091801@linkEnd@DOI:10.1103/PhysRevLett.115.091801@descriptionEnd@-,-@linkBegin@https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.115.091801@linkEnd@Phys. Rev. Lett. 115 (2015) 091801@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5442','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5442','shortTitle':'HSG6 VH H invisible V to jj','fullTitle':'Search for invisible decays of the Higgs boson produced in association with a hadronically decaying vector boson in $pp$ collisions at $\\sqrt{s}$ = 8 TeV with the ATLAS detector','pubShortTitle':'Search BSM VH(125)->invisible and V-> jet jet','refCode':'HIGG-2014-07','abstract':'A search for Higgs boson decays to invisible particles is performed using 20.3 fb$^{-1}$ of $pp$ collision data at a centre-of-mass energy of 8 TeV recorded by the ATLAS detector at the Large Hadron Collider. The process considered is Higgs boson production in association with a vector boson ($V$ = $W$ or $Z$) that decays hadronically, resulting in events with two or more jets and large missing transverse momentum. No excess of candidates is observed in the data over the background expectation. The results are used to constrain $VH$ production followed by $H$ decaying to invisible particles for the Higgs mass range $115<m_H<300$~GeV. The 95% confidence-level observed upper limit on $\\sigma_{VH} \\times \\text{BR}(H\\rightarrow \\text{inv.})$ varies from 1.6 pb at 115 GeV to 0.13 pb at 300 GeV. Assuming Standard Model production and including the $gg\\rightarrow H$ contribution as signal, the results also lead to an observed upper limit of 78% at 95% confidence level on the branching ratio of Higgs bosons decays to invisible particles at a mass of 125 GeV.','cdsLink':'','journal':'EPJC','journalSub':'16-APR-15','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,Exotic Higgs decays,Higgs to invisible,Dark matter,VH,Z,W,MET,All hadronic,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-07/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1504.04324@linkEnd@1504.04324@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1360288@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://link.springer.com/article/10.1140/epjc/s10052-015-3551-1@linkEnd@DOI: 10.1140/epjc/s10052-015-3551-1@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1140/epjc/s10052-015-3551-1@linkEnd@Eur. Phys. J. C (2015) 75:337@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'6042','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=6042','shortTitle':'ATLAS and CMS Higgs Mass Combination','fullTitle':'Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\\sqrt{s}$ = 7 and 8 TeV with the ATLAS and CMS Experiments','pubShortTitle':'H(125) ATLAS+CMS combination mass','refCode':'HIGG-2014-14','abstract':'A measurement of the Higgs boson mass is presented based on the combined data samples of the ATLAS and CMS experiments at the CERN LHC in the $H \\rightarrow \\gamma\\gamma$ and $H \\rightarrow ZZ\\rightarrow 4\\ell$ decay channels. The results are obtained from a simultaneous fit to the reconstructed invariant mass peaks in the two channels and for the two experiments. The measured masses from the individual channels and the two experiments are found to be consistent among themselves. The combined measured mass of the Higgs boson is $m_{H } = 125.09\\pm0.21\\,\\mathrm{(stat.)}\\pm0.11\\,\\mathrm{(syst.)}~\\mathrm{GeV}$.','cdsLink':'','journal':'PRL','journalSub':'26-MAR-15','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,Higgs to 4 lepton,Higgs to 2 photons,Statistical combination,Mass measurement,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-14@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1503.07589@linkEnd@1503.07589@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1356276@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1103/PhysRevLett.114.191803@linkEnd@DOI:10.1103/PhysRevLett.114.191803@descriptionEnd@-,-@linkBegin@https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.191803@linkEnd@Phys. Rev. Lett. 114 (2015) 191803@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4704','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4704','shortTitle':'HSG8 ttH bb','fullTitle':'Search for the Standard Model Higgs boson produced in association with top quarks and decaying into $b\\bar{b}$ in $pp$ collisions at $\\sqrt{s } = 8$ TeV with the ATLAS detector','pubShortTitle':'ttH(125) H->bb','refCode':'HIGG-2013-27','abstract':'A search for the Standard Model Higgs boson produced in association with a pair of top quarks, $t\\bar{t}H$, is presented. The analysis uses 20.3 fb$^{-1}$ of pp collision data at $\\sqrt{s}$ = 8 TeV, collected with the ATLAS detector at the Large Hadron Collider during 2012. The search is designed for the H to $b\\bar{b}$ decay mode and uses events containing one or two electrons or muons. In order to improve the sensitivity of the search, events are categorised according to their jet and b-tagged jet multiplicities. A neural network is used to discriminate between signal and background events, the latter being dominated by $t\\bar{t}$+jets production. In the single-lepton channel, variables calculated using a matrix element method are included as inputs to the neural network to improve discrimination of the irreducible $t\\bar{t}$+$b\\bar{b}$ background. No significant excess of events above the background expectation is found and an observed (expected) limit of 3.4 (2.2) times the Standard Model cross section is obtained at 95% confidence level. The ratio of the measured $t\\bar{t}H$ signal cross section to the Standard Model expectation is found to be $\\mu = 1.5 \\pm 1.1$ assuming a Higgs boson mass of 125 GeV.','cdsLink':'','journal':'EPJC','journalSub':'16-MAR-15','ecm':'8','luminosity':'20.3 fb-1','keywords':'8 TeV,Coupling measurements,H(125) measurements,ttH production,Higgs to bb,Top pair,b-jets,2 leptons,1 lepton','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-27/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1503.05066@linkEnd@1503.05066@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1353124@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1140/epjc/s10052-015-3543-1@linkEnd@DOI:10.1140/epjc/s10052-015-3543-1@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1140/epjc/s10052-015-3543-1@linkEnd@Eur. Phys. J. C (2015) 75:349@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5962','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5962','shortTitle':'HSG6 Charged Higgs to WZ','fullTitle':'Search for a Charged Higgs Boson Produced in the Vector-boson Fusion Mode with Decay $H^\\pm \\to W^\\pm Z$ using $pp$ Collisions at $\\sqrt{s}=8$ TeV with the ATLAS Experiment','pubShortTitle':'Search BSM H+ -> WZ','refCode':'HIGG-2014-13','abstract':'A search for a charged Higgs boson, $H^\\pm$, decaying to a $W^\\pm$ boson and a $Z$ boson is presented. The search is based on 20.3 fb$^{-1}$ of proton-proton collision data at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the LHC. The $H^\\pm$ boson is assumed to be produced via vector-boson fusion and the decays $W^\\pm \\to q\\bar{q^\\prime}$ and $Z\\rightarrow e^+e^-/\\mu^+\\mu^-$ are considered. The search is performed in a range of charged Higgs boson masses from 200 to 1000 GeV. No evidence for the production of an $H^\\pm$ boson is observed. Upper limits of 31--1020 fb at 95\\% CL are placed on the cross section for vector-boson fusion production of an $H^\\pm$ boson times its branching fraction to $W^\\pm Z$. The limits are compared with predictions from the Georgi-Machacek Higgs Triplet Model.','cdsLink':'','journal':'PRL','journalSub':'13-MAR-15','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,Charged Higgs searches,BSM Higgs searches,WZ','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-13@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1503.04233@linkEnd@1503.04233@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1352819@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://10.1103/PhysRevLett.114.231801@linkEnd@DOI@descriptionEnd@-,-@linkBegin@https://link.aps.org/abstract/PRL/v114/e231801@linkEnd@Phys. Rev. Lett. 114, 231801 (2015)@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4624','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4624','shortTitle':'HSG3 Main Spin and CP','fullTitle':'Determination of spin and parity of the Higgs boson in the $WW^*\\rightarrow e \\nu \\mu \\nu$ decay channel with the ATLAS detector','pubShortTitle':'H(125) spin/CP H-> WW','refCode':'HIGG-2013-14','abstract':'Studies of the spin and parity quantum numbers of the Higgs boson in the $WW^* \\rightarrow e \\nu \\mu \\nu$ final state are presented, based on proton--proton collision data collected by the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 20.3 fb$^{-1}$ at a centre-of-mass energy of $\\sqrt{s}=8$ TeV. The Standard Model spin-parity $J^{CP } = 0^{++}$ hypothesis is compared with alternative hypotheses for both spin and CP. The case where the observed resonance is a mixture of the Standard-Model-like Higgs boson and CP-even ($J^{CP } = 0^{++}$) or CP-odd ($J^{CP } = 0^{+-}$) Higgs boson in scenarios beyond the Standard Model is also studied. The data are found to be consistent with the Standard Model prediction and limits are placed on alternative spin and CP hypotheses, including CP mixing in different scenarios.','cdsLink':'','journal':'EPJC','journalSub':'12-MAR-15','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,Spin / CP,H(125) measurements,Higgs to WW,Higgs,WW,2 leptons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-14/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1503.03643@linkEnd@1503.03643@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1351913@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1140/epjc/s10052-015-3436-3@linkEnd@DOI@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1140/epjc/s10052-015-3436-3@linkEnd@Eur. Phys. J. C75 (2015) 231@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5662','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5662','shortTitle':'HSG2 HSG3 HSG7 Off shell couplings','fullTitle':'Constraints on the off-shell Higgs boson signal strength in the high-mass $ZZ$ and $WW$ final states with the ATLAS detector','pubShortTitle':'H(125) off-shell coupling combination (4l, ll nunu and lnu lnu)','refCode':'HIGG-2014-10','abstract':'Measurements of the $ZZ$ and $WW$ final states in the mass range above the $2m_Z$ and $2m_W$ thresholds provide a unique opportunity to measure the off-shell coupling strength of the Higgs boson. This paper presents a determination of the off-shell Higgs boson event yields normalised to the Standard Model prediction (signal strength) in the $ZZ \\rightarrow 4\\ell$, $ZZ\\rightarrow 2\\ell2\\nu$ and $WW\\rightarrow e\\nu\\mu\\nu$ final states. The result is based on $pp$ collision data collected by the ATLAS experiment at the LHC, corresponding to an integrated luminosity of $20.3$ fb$^{\\mathrm{-1}}$ at a collision energy of $\\sqrt{s}=8$ TeV. Using the $CL_s$ method, the observed 95% confidence level (CL) upper limit on the off-shell signal strength is in the range 5.1--8.6, with an expected range of 6.7--11.0. In each case the range is determined by varying the unknown $gg\\rightarrow ZZ$ and $gg\\rightarrow WW$ background K-factor from higher-order QCD corrections between half and twice the value of the known signal K-factor. Assuming the relevant Higgs boson couplings are independent of the energy scale of the Higgs production, a combination with the on-shell measurements yields an observed (expected) 95% CL upper limit on $\\Gamma_H/\\Gamma_H^{\\mathrm{SM}}$ in the range 4.5--7.5 (6.5--11.2) using the same variations of the background K-factor. Assuming that the unknown $gg\\rightarrow VV$ background K-factor is equal to the signal K-factor, this translates into an observed (expected) 95% CL upper limit on the Higgs boson total width of 22.7 (33.0) MeV.','cdsLink':'','journal':'EPJC','journalSub':'03-MAR-15','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,Off-shell Higgs,Higgs to WW,Higgs to ZZ,Higgs to 4 lepton,Statistical combination,MET,>=3 leptons,2 leptons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-10@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1503.01060@linkEnd@1503.01060@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1347135@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1140/epjc/s10052-015-3542-2@linkEnd@DOI:10.1140/epjc/s10052-015-3542-2@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1140/epjc/s10052-015-3542-2@linkEnd@Eur. Phys. J. C (2015) 75:335@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5122','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5122','shortTitle':'LPX - search Z to tau tau at 8 TeV','fullTitle':'A search for high-mass resonances decaying to $\\tau^+\\tau^-$ in pp collisions at $\\sqrt{s } = 8$ TeV with the ATLAS detector','pubShortTitle':'Di-tau Resonance Search','refCode':'EXOT-2014-05','abstract':'A search for high-mass resonances decaying into $\\tau^{+}\\tau^{-}$ final states using proton-proton collisions at $\\sqrt{s}= 8$ TeV produced by the Large Hadron Collider is presented. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 19.5-20.3 fb$^{-1}$. No statistically significant excess above the Standard Model expectation is observed; 95% credibility upper limits are set on the cross section times branching fraction of $Z^{\\prime}$ resonances decaying into $\\tau^+\\tau^-$ pairs as a function of the resonance mass. As a result, $Z^{\\prime}$ bosons of the Sequential Standard Model with masses less than 2.02 TeV are excluded at 95% credibility. The impact of the fermionic couplings on the $Z^{\\prime}$ acceptance is investigated and limits are also placed on a $Z^{\\prime}$ model that exhibits enhanced couplings to third-generation fermions.','cdsLink':'','journal':'JHEP','journalSub':'25-FEB-15','ecm':'8','luminosity':'8 fb-1','keywords':'8 TeV,BSM resonance,BSM search,Taus,2 leptons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2014-05@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1502.07177@linkEnd@1502.07177@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1346398@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1007/JHEP07(2015)157@linkEnd@DOI:10.1007/JHEP07(2015)157@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1007/JHEP07(2015)157@linkEnd@JHEP07(2015)157@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4502','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4502','shortTitle':'HSG6 Heavy Higgs to Zh','fullTitle':'Search for a CP-odd Higgs boson decaying to $Zh$ in $pp$ collisions at $\\sqrt{s } = 8$ TeV with the ATLAS detector','pubShortTitle':'Serach BSM A -> ZH(125)','refCode':'HIGG-2013-06','abstract':'A search for a heavy, CP-odd Higgs boson, $A$, decaying into a $Z$ boson and a 125 GeV Higgs boson, $h$, with the ATLAS detector at the LHC is presented. The search uses proton--proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb$^{-1}$. Decays of CP-even $h$ bosons to $\\tau\\tau$ or $bb$ pairs with the $Z$ boson decaying to electron or muon pairs are considered, as well as $h \\rightarrow bb$ decays with the $Z$ boson decaying to neutrinos. No evidence for the production of an $A$ boson in these channels is found and the 95% confidence level upper limits derived for $\\sigma (gg\\rightarrow A) \\times \\mbox{BR}(A\\rightarrow Zh) \\times \\mbox{BR}(h\\rightarrow f\\bar{f})$ are 0.098--0.013 pb for $f=\\tau$ and 0.57--0.014 pb for $f=b$ in a range of $m_A =$ 220--1000 GeV. The results are combined and interpreted in the context of two-Higgs-doublet models.','cdsLink':'','journal':'PLB','journalSub':'16-FEB-15','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,BSM Higgs searches,Z,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-06/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1502.04478@linkEnd@1502.04478@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1345028@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1016/j.physletb.2015.03.054@linkEnd@DOI:10.1016/j.physletb.2015.03.054@descriptionEnd@-,-@linkBegin@https://www.sciencedirect.com/science/article/pii/S0370269315002257@linkEnd@Physics Letters B 744 (2015) 163-183@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4084','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4084','shortTitle':'JTX - Exotics Monojet Search at 8 TeV','fullTitle':'Search for new phenomena in final states with an energetic jet and large missing transverse momentum in $pp$ collisions at $\\sqrt{s}=8~$!TeV with the ATLAS detector','pubShortTitle':'MET plus jet search','refCode':'EXOT-2013-13','abstract':'Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses 20.3 fb${}^{-1}$ of $\\sqrt{s}=8$ TeV data collected in 2012 with the ATLAS detector at the LHC. Events are required to have at least one jet with $p_T > 120$ GeV and no leptons. Nine signal regions are considered with increasing missing transverse momentum requirements between $E_{\\mathrm{T}}^{\\mathrm{miss}} >150$ GeV and $E_{\\mathrm{T}}^{\\mathrm{miss}} > 700$ GeV. Good agreement is observed between the number of events in data and Standard Model expectations. The results are translated into exclusion limits on models with large extra spatial dimensions, pair production of weakly interacting dark matter candidates, and production of very light gravitinos in a gauge-mediated supersymmetric model. In addition, limits on the production of an invisibly decaying Higgs-like boson leading to similar topologies in the final state are presented.','cdsLink':'','journal':'EPJC','journalSub':'05-FEB-15','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,Simplified DM model,Exotic Higgs decays,Strong gravity,BSM search,ISR,Dark matter,MET,1 jet,0 lepton','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2013-13@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1502.01518@linkEnd@1502.01518@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1343107@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1140/epjc/s10052-015-3517-3@linkEnd@DOI:10.1140/epjc/s10052-015-3517-3@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1140/epjc/s10052-015-3517-3@linkEnd@Eur. Phys. J. C 75 (2015) 299@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4782','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4782','shortTitle':'HSG4 Main coupling H to tautau','fullTitle':'Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector','pubShortTitle':'h(125) -> tau tau','refCode':'HIGG-2013-32','abstract':'Results of a search for $H \\to \\tau \\tau$ decays are presented, based on the full set of proton--proton collision data recorded by the ATLAS experiment at the LHC during 2011 and 2012. The data correspond to integrated luminosities of 4.5 $\\rm{fb}^{-1}$ and 20.3 $\\rm{fb}^{-1}$ at centre-of-mass energies of $\\sqrt{s}$ = 7 TeV and $\\sqrt{s}$ = 8 TeV respectively. All combinations of leptonic ($\\tau \\to \\ell \\nu \\bar \\nu$ with $\\ell = e, \\mu$) and hadronic ($\\tau \\to \\rm{hadrons}~ \\nu$) tau decays are considered. An excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.5 (3.4) standard deviations. This excess provides evidence for the direct coupling of the recently discovered Higgs boson to fermions. The measured signal strength, normalised to the Standard Model expectation, of $\\mu = 1.43 ^{+0.43}_{-0.37}$ is consistent with the predicted Yukawa coupling strength in the Standard Model.','cdsLink':'','journal':'JHEP','journalSub':'20-JAN-15','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,Coupling measurements,H(125) measurements,VBF production,Gluon fusion production,Higgs to tautau,VBF,Higgs,2 jets,Taus,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-32@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1501.04943@linkEnd@1501.04943@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1340321@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1007/JHEP04(2015)117@linkEnd@DOI:10.1007/JHEP04(2015)117@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1007/JHEP04(2015)117@linkEnd@JHEP 04 (2015) 117@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5183','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5183','shortTitle':'HSG6 H JPsi gamma','fullTitle':'Search for Higgs and Z Boson Decays to J/psi gamma and Upsilon(nS) gamma with the ATLAS Detector','pubShortTitle':'Search H(125)/Z->J/psi gamma and Upsilon(nS) gamma','refCode':'HIGG-2014-03','abstract':'A search for the decays of the Higgs and $Z$ bosons to $J/\\psi\\gamma$ and $\\Upsilon(nS)\\gamma$ ($n=1,2,3$) is performed with $pp$ collision data samples corresponding to integrated luminosities of up to $20.3\\mathrm{fb}^{-1}$ collected at $\\sqrt{s}=8\\mathrm{TeV}$ with the ATLAS detector at the CERN Large Hadron Collider. No significant excess of events is observed above expected backgrounds and 95\\% CL upper limits are placed on the branching fractions. In the $J/\\psi\\gamma$ final state the limits are $1.5\\times10^{-3}$ and $2.6\\times10^{-6}$ for the Higgs and $Z$ bosons, respectively, while in the $\\Upsilon(1S,2S,3S)\\,\\gamma$ final states the limits are $(1.3,1.9,1.3)\\times10^{-3}$ and $(3.4,6.5,5.4)\\times10^{-6}$, respectively.','cdsLink':'','journal':'PRL','journalSub':'14-JAN-15','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,Exotic Higgs decays,Higgs to meson+photon,Higgs to cc,Higgs to bb,Photons,2 leptons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-03/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1501.03276@linkEnd@1501.03276@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1339252@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1103/PhysRevLett.114.121801@linkEnd@DOI:10.1103/PhysRevLett.114.121801@descriptionEnd@-,-@linkBegin@https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.121801@linkEnd@Phys. Rev. Lett. 114 (2015) 121801@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4762','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4762','shortTitle':'HSG6 Charged to tau nu','fullTitle':'Search for charged Higgs bosons decaying via H+- --> tau +- nu in fully hadronic final states using pp collision data at sqrt(s) = 8 TeV with the ATLAS detector','pubShortTitle':'Search BSM H+ -> tau nu','refCode':'HIGG-2013-30','abstract':'The results of a search for charged Higgs bosons decaying to a $\\tau$ lepton and a neutrino, $H^{\\pm} \\rightarrow \\tau^{\\pm} \\nu$, are presented. The analysis is based on 19.5 fb$^{-1}$ of proton--proton collision data at $\\sqrt{s}=8$ TeV collected by the ATLAS experiment at the Large Hadron Collider. Charged Higgs bosons are searched for in events consistent with top-quark pair production or in associated production with a top quark. The final state is characterised by the presence of a hadronic $\\tau$ decay, missing transverse momentum, $b$-tagged jets, a hadronically decaying $W$ boson, and the absence of any isolated electrons or muons with high transverse momenta. The data are consistent with the expected background from Standard Model processes. A statistical analysis leads to 95% confidence-level upper limits on the product of branching ratios ${\\cal B}(t\\rightarrow bH^\\pm) \\times {\\cal B}(H^\\pm\\rightarrow \\tau^{\\pm}\\nu)$, between 0.23% and 1.3% for charged Higgs boson masses in the range 80--160 GeV. It also leads to 95% confidence-level upper limits on the production cross section times branching ratio, $\\sigma(pp \\rightarrow tH^{\\pm} + X) \\times {\\cal B}(H^{\\pm} \\rightarrow \\tau^{\\pm} \\nu)$, between 0.76 pb and 4.5 fb, for charged Higgs boson masses ranging from 180 GeV to 1000 GeV. In the context of different scenarios of the Minimal Supersymmetric Standard Model, these results exclude nearly all values of $\\tan\\beta$ above one for charged Higgs boson masses between 80 GeV and 160 GeV, and exclude a region of parameter space with high $\\tan\\beta$ for $H^{\\pm}$ masses between 200 GeV and 250 GeV.','cdsLink':'','journal':'JHEP','journalSub':'20-DEC-14','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,Charged Higgs searches,BSM Higgs searches,Taus','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-30/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1412.6663@linkEnd@1412.6663@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1335266@linkEnd@Inspire@descriptionEnd@
@linkBegin@https://www.hepdata.net/record/68153@linkEnd@HepData@descriptionEnd@','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1007/JHEP03(2015)088@linkEnd@DOI:10.1007/JHEP03(2015)088@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1007/JHEP03(2015)088@linkEnd@JHEP03 (2015) 088@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4623','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4623','shortTitle':'HSG3 Main Couplings','fullTitle':'Observation and measurement of Higgs boson decays to WW* with the ATLAS detector','pubShortTitle':'H(125) H-> WW couplings','refCode':'HIGG-2013-13','abstract':'We report the observation of Higgs boson decays to $WW^{\\ast}$ based on an excess over background of 6.1 standard deviations in the dilepton final state, where the Standard Model expectation is 5.8 standard deviations. Evidence for the vector-boson fusion (VBF) production process is obtained with a significance of 3.2 standard deviations. The results are obtained from a data sample corresponding to an integrated luminosity of $25~\\textrm{pb}^{-1}$ from $\\sqrt{s}= 7$ and 8 TeV $pp$ collisions recorded by the ATLAS detector at the LHC. For a Higgs boson mass of 125.36 GeV, the ratio of the measured value to the expected value of the total production cross section times branching fraction is $1.09^{+0.16}_{-0.15}~\\textrm{(stat.)}^{+0.17}_{-0.14}~\\textrm{(syst.)}$. The corresponding ratios for the gluon fusion and vector-boson fusion production mechanisms are $1.02\\pm 0.19~\\textrm{(stat.)}^{+0.22}_{-0.18}~\\textrm{(syst.)}$ and $1.27^{+0.44}_{-0.40}~\\textrm{(stat.)}^{+0.30}_{-0.21}~\\textrm{(syst.)}$, respectively. At $\\sqrt{s}=8$ TeV, the total production cross sections are measured to be $\\sigma(gg\\to~H\\rightarrow WW^\\ast) = 4.6\\pm0.9\\,\\textrm{(stat.)}\\,^{+0.8}_{-0.7}\\,\\textrm{(syst.)}\\textrm{pb}$ and $\\sigma(\\textrm{VBF}~H\\rightarrow WW^\\ast) = 0.51\\,^{+0.17}_{-0.15}\\,\\textrm{(stat.)}\\,^{+0.13}_{-0.08}\\,\\textrm{(syst.)}\\textrm{pb}$. The fiducial cross section is determined for the gluon-fusion process in exclusive final states with zero or one associated jet.','cdsLink':'','journal':'PRD','journalSub':'08-DEC-14','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,kappa,Coupling measurements,H(125) measurements,VBF production,Gluon fusion production,Higgs to WW,VBF,Gluon fusion,Cross-section measurement,Higgs,WW,2 leptons,8 TeV','links':'@linkBegin@http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-13/@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1412.2641@linkEnd@1412.2641@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1333228@linkEnd@Inspire@descriptionEnd@
@linkBegin@http://atlas.cern/updates/physics-briefing/new-atlas-precision-measurements-higgs-boson-observation-ww-decay@linkEnd@Briefing@descriptionEnd@','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1103/PhysRevD.92.012006@linkEnd@DOI@descriptionEnd@-,-@linkBegin@https://journals.aps.org/prd/abstract/10.1103/PhysRevD.92.012006@linkEnd@Phys. Rev. D 92, 012006 (2015)@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4642','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4642','shortTitle':'HSG5 VH to bb','fullTitle':'Search for the bb decay of the Standard Model Higgs boson in associated (W/Z)H production with the ATLAS detector','pubShortTitle':'VH(125), H->bb','refCode':'HIGG-2013-23','abstract':'A search for the $b\\bar{b}$ decay of the Standard Model Higgs boson is performed with the ATLAS experiment using the full dataset recorded at the LHC in Run 1. The integrated luminosities used from $pp$ collisions at $\\sqrt{s}= 7$ and 8 TeV are 4.7 and 20.3 fb$^{-1}$, respectively. The processes considered are associated $(W/Z)H$ production, where $W\\to e\\nu/\\mu\\nu$, $Z\\to ee/\\mu\\mu$ and $Z\\to\\nu\\nu$. The observed (expected) deviation from the background-only hypothesis corresponds to a significance of 1.4 (2.6) standard deviations and the ratio of the measured signal yield to the Standard Model expectation is found to be $\\mu = 0.52 \\pm 0.32 \\mathrm{(stat.)} \\pm 0.24 \\mathrm{(syst.)}$ for a Higgs boson mass of 125.36 GeV. The analysis procedure is validated by a measurement of the yield of $(W/Z)Z$ production with $Z\\to b\\bar{b}$ in the same final states as for the Higgs boson search, from which the ratio of the observed signal yield to the Standard Model expectation is found to be $0.74 \\pm 0.09 \\mathrm{(stat.)} \\pm 0.14 \\mathrm{(syst.)}$.','cdsLink':'','journal':'JHEP','journalSub':'22-SEP-14','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,Coupling measurements,H(125) measurements,Higgs to bb,VH,b-jets,2 leptons,1 lepton,0 lepton,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-23@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1409.6212@linkEnd@1409.6212@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1318484@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1007/JHEP01(2015)069@linkEnd@DOI:10.1007/JHEP01(2015)069@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1007/JHEP01(2015)069@linkEnd@JHEP01(2015)069@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4763','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4763','shortTitle':'HSG6 MSSM to tautau','fullTitle':'Search for neutral Higgs bosons of the Minimal Supersymmetric Standard Model in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector','pubShortTitle':'Search BSM H/A -> tau tau','refCode':'HIGG-2013-31','abstract':'A search for the neutral Higgs bosons predicted by the Minimal Supersymmetric Standard Model (MSSM) is reported. The analysis is performed on data from proton--proton collisions at a centre-of-mass energy of $8 TeV$ collected with the ATLAS detector at the Large Hadron Collider. The samples used for this search were collected in 2012 and correspond to integrated luminosities in the range 19.5 - 20.3 fb$^{-1}$. The MSSM Higgs bosons are searched for in the $\\tau\\tau$ final state. No significant excess over the expected background is observed, and exclusion limits are derived for the production cross section times branching fraction of a scalar particle as a function of its mass. The results are also interpreted in the MSSM parameter space for various benchmark scenarios.','cdsLink':'','journal':'JHEP','journalSub':'21-SEP-14','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,BSM Higgs searches,BSM search,Taus','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-31@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1409.6064@linkEnd@1409.6064@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1318481@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1007/JHEP11(2014)056@linkEnd@DOI:10.1007/JHEP11(2014)056@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1007/JHEP11(2014)056@linkEnd@JHEP11(2014)056@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4702','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4702','shortTitle':'HSG8 HSG1 ttH diphoton','fullTitle':'Search for H→γγ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector','pubShortTitle':'ttH(125) H->gamma gamma','refCode':'HIGG-2013-25','abstract':'A search is performed for Higgs bosons produced in association with top quarks using the diphoton decay mode of the Higgs boson. Selection requirements are optimized separately for leptonic and fully hadronic final states from the top quark decays. The dataset used corresponds to an integrated luminosity of 4.5 $\\mbox{fb$^{-1}$}$ of proton--proton collisions at a center-of-mass energy of 7 TeV and 20.3 $\\mbox{fb$^{-1}$}$ at 8 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. No significant excess over the background prediction is observed and upper limits are set on the $t\\bar{t}H$ production cross section. The observed exclusion upper limit at 95% confidence level is 6.7 times the predicted Standard Model cross section value. In addition, limits are set on the strength of the Yukawa coupling between the top quark and the Higgs boson, taking into account the dependence of the $t\\bar{t}H$ and $tH$ cross sections as well as the $H \\rightarrow \\gamma\\gamma$ branching fraction on the Yukawa coupling. Lower and upper limits at 95% confidence level are set at $-$1.3 and +8.0 times the Yukawa coupling strength in the Standard Model.','cdsLink':'','journal':'PLB','journalSub':'10-SEP-14','ecm':'7, 8','luminosity':'5 fb-1, 20 fb-1','keywords':'7 TeV,Coupling measurements,H(125) measurements,ttH production,Top pair,Di-photon,Photon,b-jets,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-25@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1409.3122@linkEnd@1409.3122@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1315819@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1016/j.physletb.2014.11.049@linkEnd@DOI:10.1016/j.physletb.2014.11.049@descriptionEnd@-,-@linkBegin@https://www.sciencedirect.com/science/article/pii/S037026931400851X@linkEnd@Phys. Lett. B 740 (2015) 222@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4582','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4582','shortTitle':'HSG1 Higgs to gamma gamma couplings','fullTitle':'Measurement of Higgs boson production in the diphoton decay channel in $pp$ collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector','pubShortTitle':'H(125) H-> gamma gamma couplings','refCode':'HIGG-2013-08','abstract':'A measurement of the production processes of the recently discovered Higgs boson is performed in the two-photon final state using 5.4 fb$^{-1}$ of proton-proton collisions data at $\\sqrt{s}= 7$ TeV and 20.3 fb$^{-1}$ at $\\sqrt{s}=8$ TeV collected by the ATLAS detector at the Large Hadron Collider. The number of observed Higgs boson decays to diphotons divided by the corresponding Standard Model prediction, called the signal strength, is found to be $\\mu = 1.17 \\pm 0.27$ at the value of the Higgs boson mass measured by ATLAS, $m_{H}$ = 125.4 GeV. The analysis is optimized to measure the signal strengths for individual Higgs boson production processes at this value of $m_{H}$. They are found to be $\\mu_{\\mathrm{ggF} } = 1.32 \\pm 0.38$, $\\mu_{\\mathrm{VBF} } = 0.8 \\pm 0.7$, $\\mu_{\\mathrm{WH} } = 1.0 \\pm 1.6$, $\\mu_{\\mathrm{ZH} } = 0.1 ^{+3.7}_{-0.1}$, $\\mu_{\\mathrm{t\\bar{t}H} } = 1.6 ^{+2.7}_{-1.8}$, for Higgs boson production through gluon fusion, vector-boson fusion, and in association with a $W$ or $Z$ boson or a top-quark pair, respectively. Compared with the previously published ATLAS analysis, the results reported here also benefit from a new energy calibration procedure for photons and the subsequent reduction of the systematic uncertainty on the diphoton mass resolution. No significant deviations from the predictions of the Standard Model are found.','cdsLink':'','journal':'PRD','journalSub':'29-AUG-14','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,Statistical methods,kappa,Coupling measurements,H(125) measurements,ttH production,VH production,VBF production,Gluon fusion production,Higgs to 2 photons,VBF,Higgs,Di-photon,Photons,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-08@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1408.7084@linkEnd@1408.7084@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1312978@linkEnd@Inspire@descriptionEnd@
@linkBegin@https://www.hepdata.net/record/69473@linkEnd@HepData@descriptionEnd@@linkBegin@http://atlas.cern/updates/physics-briefing/higgs-boson-production-measurements-channels-discovery@linkEnd@Briefing@descriptionEnd@','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1103/PhysRevD.90.112015@linkEnd@DOI:10.1103/PhysRevD.90.112015@descriptionEnd@-,-@linkBegin@https://journals.aps.org/prd/abstract/10.1103/PhysRevD.90.112015@linkEnd@Phys. Rev. D. 90, 112015 (2014)@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4630','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4630','shortTitle':'HSG2 Main Couplings Paper','fullTitle':'Measurements of Higgs boson production and couplings in the four-lepton channel in $pp$ collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector','pubShortTitle':'H(125) -> 4l couplings','refCode':'HIGG-2013-21','abstract':'The final ATLAS Run 1 measurements of Higgs boson production and couplings in the decay channel $H\\to ZZ^{*}\\to\\ell^+\\ell^-\\ell^{+}\\ell^{-}$, where $\\ell,\\ell^{}=e$ or $\\mu$, are presented. These measurements were performed using $pp$ collision data corresponding to integrated luminosities of 4.5 fb$^{-1}$ and 20.3 fb$^{-1}$ at center-of-mass energies of 7 TeV and 8 TeV, respectively, recorded with the ATLAS detector at the LHC. The $H\\to ZZ^{*}\\to 4\\ell$ signal is observed with a significance of 8.1 standard deviations at 125.36 GeV, the combined ATLAS measurement of the Higgs boson mass from the $H\\rightarrow \\gamma\\gamma$ and $H\\to ZZ^{*}\\to 4\\ell$ channels. The production rate relative to the Standard Model expectation, the signal strength, is measured in four different production categories in the $H\\to ZZ^{*}\\to 4\\ell$ channel. The measured signal strength, at this mass, and with all categories combined, is 1.44 $^{+0.40}_{-0.33}$. The signal strength for Higgs boson production in gluon fusion or in association with $t\\bar{t}$ or $b\\bar{b}$ pairs is found to be 1.7 $^{+0.5}_{-0.4}$, while the signal strength for vector-boson fusion combined with $WH/ZH$ associated production is found to be 0.3 $^{+1.6}_{-0.9}$.','cdsLink':'','journal':'PRD','journalSub':'21-AUG-14','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,kappa,Coupling measurements,H(125) measurements,VH production,VBF production,Gluon fusion production,Higgs to ZZ,Higgs to 4 lepton,VBF,Gluon fusion,ZZ,>=3 leptons,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-21@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1408.5191@linkEnd@1408.5191@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1311990@linkEnd@Inspire@descriptionEnd@
@linkBegin@http://atlas.cern/updates/physics-briefing/higgs-boson-production-measurements-channels-discovery@linkEnd@Briefing@descriptionEnd@','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1103/PhysRevD.91.012006@linkEnd@DOI:10.1103/PhysRevD.91.012006@descriptionEnd@-,-@linkBegin@https://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.012006@linkEnd@Phys. Rev. D 91 (2015) 012006@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4631','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4631','shortTitle':'HSG2 Differential and fiducial','fullTitle':'Fiducial and differential cross sections of Higgs boson production measured in the four-lepton decay channel in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector','pubShortTitle':'H(125) -> 4l fiducial differential cross-sections','refCode':'HIGG-2013-22','abstract':'Measurements of fiducial and differential cross sections of Higgs boson production in the ${H \\rightarrow ZZ ^{*}\\rightarrow 4\\ell}$ decay channel are presented. The cross sections are determined within a fiducial phase space and corrected for detection efficiency and resolution effects. They are based on 20.3 fb$^{-1}$ of $pp$ collision data, produced at $\\sqrt{s}$=8 TeV centre-of-mass energy at the LHC and recorded by the ATLAS detector. The differential measurements are performed in bins of transverse momentum and rapidity of the four-lepton system, the invariant mass of the subleading lepton pair and the decay angle of the leading lepton pair with respect to the beam line in the four-lepton rest frame, Ã‚Â as well as the number of jets and the transverse momentum of the leading jet. The measured cross sections are compared to selected theoretical calculations of the Standard Model expectations. No significant deviation from any of the tested predictions is found.','cdsLink':'','journal':'PLB','journalSub':'14-AUG-14','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,H(125) measurements,Higgs to 4 lepton,Differential measurement,Cross-section measurement,Higgs,ZZ,>=3 leptons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-22@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1408.3226@linkEnd@1408.3226@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1310835@linkEnd@Inspire@descriptionEnd@
@linkBegin@https://www.hepdata.net/record/78567@linkEnd@HepData@descriptionEnd@','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1016/j.physletb.2014.09.054@linkEnd@DOI:10.1016/j.physletb.2014.09.054@descriptionEnd@-,-@linkBegin@https://www.sciencedirect.com/science/article/pii/S0370269314007126@linkEnd@Physics Letters B 738 (2014) 234-253@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'5282','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=5282','shortTitle':'HSG1 low and high mass search','fullTitle':'Search for Scalar Diphoton Resonances in the Mass Range 65-600 Gev with the ATLAS Detector in pp Collision Data at sqrt(s) = 8 TeV','pubShortTitle':'Search BSM H-> gamma gamma','refCode':'HIGG-2014-04','abstract':'A search for scalar particles decaying via narrow resonances into two photons in the mass range $65-600$ GeV is performed using 20.3 fb$^{-1}$ of $\\sqrt{s}$ = 8 TeV $pp$ collision data collected with the ATLAS detector at the Large Hadron Collider. The recently discovered Higgs boson is treated as a background. No significant evidence for an additional signal is observed. The results are presented as limits at the 95 % confidence level on the production cross-section of a scalar boson times branching ratio into two photons, in a fiducial volume where the reconstruction efficiency is approximately independent of the event topology. The upper limits set extend over a considerably wider mass range than previous searches.','cdsLink':'','journal':'PRL','journalSub':'24-JUL-14','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,BSM Higgs searches,Higgs to 2 photons,Photons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-04@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1407.6583@linkEnd@1407.6583@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1307756@linkEnd@Inspire@descriptionEnd@
','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1103/PhysRevLett.113.171801@linkEnd@DOI:10.1103/PhysRevLett.113.171801@descriptionEnd@-,-@linkBegin@https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.171801@linkEnd@Phys. Rev. Lett. 113, 171801@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4584','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4584','shortTitle':'HSG1 Diphoton differential','fullTitle':'Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at sqrt(s) = 8 TeV with ATLAS','pubShortTitle':'H(125) H-> gamma gamma fiducial and differential cross-sections','refCode':'HIGG-2013-10','abstract':'Measurements of fiducial and differential cross sections are presented for Higgs boson production in proton-proton collisions at a centre-of-mass energy of $\\sqrt{s}=8$ TeV. The analysis is performed in the $H \\rightarrow \\gamma\\gamma$ decay channel using 20.3 fb$^{-1}$ of data recorded by the ATLAS experiment at the CERN Large Hadron Collider. The signal is extracted using a fit to the diphoton invariant mass spectrum assuming that the width of the resonance is much smaller than the experimental resolution. The signal yields are corrected for the effects of detector inefficiency and resolution. The $pp\\rightarrow H \\rightarrow \\gamma\\gamma$ fiducial cross section is measured to be $43.2 \\pm 9.4 (stat) {}^{+3.2}_{-2.9} (syst) \\pm 1.2 (lumi)$ fb for a Higgs boson of mass 125.4 GeV decaying to two isolated photons that have transverse momentum greater than 35% and 25% of the diphoton invariant mass and each with absolute pseudorapidity less than 2.37. Four additional fiducial cross sections and two cross-section limits are presented in phase space regions that test the theoretical modelling of different Higgs boson production mechanisms, or are sensitive to physics beyond the Standard Model. Differential cross sections are also presented, as a function of variables related to the diphoton kinematics and the jet activity produced in the Higgs boson events. The observed spectra are statistically limited but broadly in line with the theoretical expectations.','cdsLink':'','journal':'JHEP','journalSub':'16-JUL-14','ecm':'8','luminosity':'20 μb-1','keywords':'8 TeV,H(125) measurements,Higgs to 2 photons,Differential measurement,Cross-section measurement,Photons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-10@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1407.4222@linkEnd@1407.4222@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1306615@linkEnd@Inspire@descriptionEnd@
@linkBegin@http://hepdata.cedar.ac.uk/view/ins1306615@linkEnd@HepData@descriptionEnd@@linkBegin@http://atlas.cern/updates/physics-briefing/probing-higgs-boson-production-properties@linkEnd@Briefing@descriptionEnd@','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1007/JHEP09(2014)112@linkEnd@DOI@descriptionEnd@-,-@linkBegin@https://link.springer.com/article/10.1007/JHEP09(2014)112@linkEnd@JHEP09(2014)112@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4563','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4563','shortTitle':'HSG4 H to mumu Winter 2013','fullTitle':'Search for the Standard Model Higgs boson decay to mu+mu- with the ATLAS detector','pubShortTitle':'Search H(125)->mumu','refCode':'HIGG-2013-07','abstract':'A search is reported for Higgs boson decay to $\\mu^{+}\\mu^{-}$ using data with an integrated luminosity of $24.8~\\rm{fb}^{-1}$ collected with the ATLAS detector in $pp$ collisions at $\\sqrt{s}=$7 and 8 TeV at the CERN Large Hadron Collider. The observed dimuon invariant mass distribution is consistent with the Standard Model background-only hypothesis in the 120--150 GeV search range. For a Higgs boson with a mass of 125.5 GeV, the observed (expected) upper limit at the 95% confidence level is 7.0 (7.2) times the Standard Model expectation. This corresponds to an upper limit on the branching ratio BR($H \\rightarrow \\mu^+\\mu^-$) of $1.5\\times10^{-3}$.','cdsLink':'','journal':'PLB','journalSub':'30-JUN-14','ecm':'7, 8','luminosity':'25 fb-1','keywords':'7 TeV,Higgs to 2 muons,2 leptons,8 TeV','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-07@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1406.7663@linkEnd@1406.7663@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1303897@linkEnd@Inspire@descriptionEnd@
','run':'1; 1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1016/j.physletb.2014.09.008@linkEnd@DOI:10.1016/j.physletb.2014.09.008@descriptionEnd@-,-@linkBegin@https://www.sciencedirect.com/science/article/pii/S0370269314006583@linkEnd@Physics Letters B 738 (2014) 68-86@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4723','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4723','shortTitle':'HSG1 HSG6 HH to bbgg','fullTitle':'Search for double Higgs production in the H->gamgam and H->bb decay channels','pubShortTitle':'Search BSM H->H(125)H(125)->bb gamma gamma and H(125)H(125)->bb gamma gamma','refCode':'HIGG-2013-29','abstract':'Searches are performed for resonant and non-resonant Higgs boson pair production in the $hh \\rightarrow \\gamma\\gamma b \\overline b$ final state using 20 fb$^{-1}$ of proton--proton collisions at a center-of-mass energy of 8TeV recorded with the ATLAS detector at the CERN Large Hadron Collider. A 95% confidence level upper limit on the cross section times branching ratio of non--resonant production is set at 2.2 pb, while the expected limit is 1.0 pb. The corresponding limit observed for a narrow resonance ranges between 0.8 and 3.5 pb as a function of its mass.','cdsLink':'','journal':'PRL','journalSub':'19-JUN-14','ecm':'8','luminosity':'20 fb-1','keywords':'8 TeV,BSM Higgs searches,Di-Higgs production,Higgs to bb,Higgs to 2 photons,BSM search,Di-Higgs,Di-photon,b-jets,Photons','links':'@linkBegin@https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-29@linkEnd@Documents@descriptionEnd@,@linkBegin@https://arxiv.org/abs/1406.5053@linkEnd@1406.5053@descriptionEnd@,@linkBegin@https://inspirehep.net/record/1301558@linkEnd@Inspire@descriptionEnd@
@linkBegin@http://hepdata.cedar.ac.uk/view/ins1301558@linkEnd@HepData@descriptionEnd@','run':'1','finalPubRef':'@linkBegin@https://dx.doi.org/10.1103/PhysRevLett.114.081802@linkEnd@DOI@descriptionEnd@-,-@linkBegin@https://link.aps.org/abstract/PRL/v114/e081802@linkEnd@Phys. Rev. Lett. 114, 081802 (2015)@descriptionEnd@','publicationType':'PAPER','pressStatement':''},{'publicationId':'4622','internalLink':'https://glance.cern.ch/atlas/analysis/papers/details.php?id=4622','shortTitle':'HSG1 HSG2 HSG7 Higgs Mass','fullTitle':'','pubShortTitle':'H(125) mass from H-> gamma gamma and H->ZZ->4l','refCode':'HIGG-2013-12','abstract':'An improved measurement of the mass of the Higgs boson is derived from a combined fit to the invariant mass spectra of the decay channels $H\\rightarrow \\gamma\\gamma$ and $H{\\rightarrow\\,}ZZ^{*}{\\rightarrow\\,}4\\ell$. The analysis uses the $pp$ collision data sample recorded by the ATLAS experiment at the CERN Large Hadron Collider at center-of-mass energies of 7 TeV and 8~TeV, corresponding to an integrated luminosity of 25 fb$^{-1}$. The measured value of the Higgs boson mass is $m_{H } = 125.36 \\pm 0.37 \\,\\mathrm{(stat)} \\pm 0.18 \\,\\mathrm{(syst)}$ GeV. This result is based on improved energy-scale calibrations for photons, electrons, and muons as well as other a