LHCHXSWGExoticDecayYR4ExtraMaterials < LHCPhysics

>LHCHXSWGExoticDecayYR4ExtraMaterials (2016-03-01, AbdollahMohammadi) (raw view)

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---+!! Search strategies for exotic decays of the Higgs boson in the gg+MET final state at the LHC


*Table of contents:* %TOC%

---+ Abstract

  In this study, we devise a search strategy for the exotic decay of the 125 GeV Higgs boson in the $\gamma\gamma+MET$ final state. The studied final state comes in two different topologies: resonant and non-resonant. In the resonant case, the Higgs decays into two scalars, one being undetected and the other decaying resonantly into two photons. The non-resonant case, based on low scale SUSY breaking models, the Higgs decays into two neutralinos, each subsequently decaying into a photon and a gravitino. We estimate the sensitivity of these searches using a DELPHES detector simulation, and targeting $100$ fb$^{-1}$ of $\sqrt{s}=14$ TeV $pp$ data from the LHC. 

---+ Figures from ggMET



| <img alt="" src="%ATTACHURL%/feyn_nonres.png" width="400" />  | [[%ATTACHURL%/feyn_nonres.pdf][pdf]]  | *Figure 1a*: Feynman diagrams for the non-resonant  signal scenarios (Based on low scale SUSY breaking models, the Higgs decays into two neutralinos, each subsequently decaying into a photon and a gravitino)|



| <img alt="" src="%ATTACHURL%/feyn_res-1.png" width="400" />  | [[%ATTACHURL%/feyn_res.pdf][pdf]]  | *Figure 1b*: Feynman diagrams for  the resonant signal scenarios (Higgs decays into two scalars, one being undetected and the other decaying resonantly into two photons)|

| <img alt="" src="%ATTACHURL%/Efficiencies.png" width="400" />  | [[%ATTACHURL%/Efficiencies.pdf][pdf]]  | *Figure 2*: signal selection efficiency after triggers selection v.s. mass for different signal scenarios and types    |


| <img alt="" src="%ATTACHURL%/LOG_MET.png" width="400" />  | [[%ATTACHURL%/LOG_MET.pdf][pdf]]  | *Figure 3*: Missing transverse distribution of signal and background  for the gluon-gluon production mode|

| <img alt="" src="%ATTACHURL%/LOG_Photon_dphi.png" width="400" />  | [[%ATTACHURL%/LOG_Photon_dphi.pdf][pdf]]  | *Figure 4*: Distribution of deltaPhi between di photon for signal and background for  the gluon-gluon production mode|

| <img alt="" src="%ATTACHURL%/LOG_AllMT.png" width="400" />  | [[%ATTACHURL%/LOG_AllMT.pdf][pdf]]  | *Figure 5*: MT distribution (MT of $\gamma\gamma+MET$, $\mu\mu$) of signal and backgrounds   for the ZH production mode|

| <img alt="" src="%ATTACHURL%/LOG_Photon_iMass.png" width="400" />  | [[%ATTACHURL%/LOG_Photon_iMass.pdf][pdf]]  | *Figure 6*: Photons invariant mass  distribution  of signal and backgrounds   for the ZH production mode |

| <img alt="" src="%ATTACHURL%/LOG_dPhiDiPhoDiMu.png" width="400" />  | [[%ATTACHURL%/LOG_dPhiDiPhoDiMu.pdf][pdf]]  | *Figure 7*: delta phi between di photon and di muons  distribution  of signal and backgrounds   for the ZH production mode|

| <img alt="" src="%ATTACHURL%/LOG_dimuon_mass.png" width="400" />  | [[%ATTACHURL%/LOG_dimuon_mass.pdf][pdf]]  | *Figure 8*: Di muon invariant mass distribution  of signal and backgrounds   for the ZH production mode |


| <img alt="" src="%ATTACHURL%/LOG_dimuon_pt.png" width="400" />  | [[%ATTACHURL%/LOG_dimuon_pt.pdf][pdf]]  | *Figure 9*: Pt of dimuon for signal and backgrounds  for the ZH production mode|



| <img alt="" src="%ATTACHURL%/LOG_dphi_ggMET_real.png" width="400" />  | [[%ATTACHURL%/LOG_dphi_ggMET_real.pdf][pdf]]  | *Figure 10*: &#8710;&#966; between Diphoton and MET distribution  of signal and backgrounds   for the ZH production mode|



| <img alt="" src="%ATTACHURL%/LOG_leadingPhoton_pt.png" width="400" />  | [[%ATTACHURL%/LOG_leadingPhoton_pt.pdf][pdf]]  | *Figure 11*: leading Photon Pt distribution  of signal and backgrounds   for the ZH production mode|

| <img alt="" src="%ATTACHURL%/LOG_subleadingPhoton_pt.png" width="400" />  | [[%ATTACHURL%/LOG_subleadingPhoton_pt.pdf][pdf]]  | *Figure 12*: subleading Photon Pt distribution  of signal and backgrounds   for the ZH production mode|

| <img alt="" src="%ATTACHURL%/LOG_masslessMT.png" width="400" />  | [[%ATTACHURL%/LOG_masslessMT.pdf][pdf]]  | *Figure 13*: Transverse Mass distribution  of signal and backgrounds   for the ZH production mode|



| <img alt="" src="%ATTACHURL%/NewSig.png" width="400" />  | [[%ATTACHURL%/NewSig.pdf][pdf]]  | *Figure 14*: Significance plots for different trigger scenarios in the gluon fusion analysis, for a reference signal branching ratio of BR(h &#8594; &#947;&#947; + E/T ) = 10% |



| <img alt="" src="%ATTACHURL%/Significance_withSys.png" width="400" />  | [[%ATTACHURL%/Significance_withSys.pdf][pdf]]  | *Figure 15*: Significance plots for different trigger and signal scenarios in the gluon fusion analysis , for a reference signal branching ratio of BR(h &#8594; &#947;&#947; + E/T ) = 10% |



| <img alt="" src="%ATTACHURL%/branchingratio_ggh.png" width="400" />  | [[%ATTACHURL%/branchingratio_ggh.pdf][pdf]]  | *Figure 16*: 5&#963; branching ratios for the ggF channel, for resonant (in red) and non-resonant (in black) final states, using the &#947; + E/T trigger,  for a reference signal branching ratio of BR(h &#8594; &#947;&#947; + E/T ) = 10% |



| <img alt="" src="%ATTACHURL%/exclusion_zh.png" width="400" />  | [[%ATTACHURL%/exclusion_zh.pdf][pdf]]  | *Figure 17*: Branching ratios for 95% confidence level exclusion in the ZH case, resonant and non-resonant topologies, requiring at least one photon (N&#947; &#8805; 1, in green and blue, respectively) and at least two photons (N&#947; &#8805; 2 in black and red, respectively),  for a reference signal branching ratio of BR(h &#8594; &#947;&#947; + E/T ) = 10% . The shaded areas correspond to a variation in systematics up to 10% |

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
pdf	Efficiencies.pdf	r1	manage	15.2 K	2016-02-06 - 15:33	AbdollahMohammadi	ggmet Plots
png	Efficiencies.png	r1	manage	135.9 K	2016-02-06 - 16:08	AbdollahMohammadi	ggmet Plots PNG
pdf	LOG_AllMT.pdf	r1	manage	15.5 K	2016-02-06 - 15:33	AbdollahMohammadi	ZH Preselection
png	LOG_AllMT.png	r1	manage	115.2 K	2016-02-06 - 16:08	AbdollahMohammadi	ggmet Plots PNG
pdf	LOG_MET.pdf	r2 r1	manage	15.6 K	2016-02-06 - 15:33	AbdollahMohammadi	ZH Preselection
png	LOG_MET.png	r1	manage	142.3 K	2016-02-06 - 16:09	AbdollahMohammadi	ggmet plots PNG
pdf	LOG_Photon_dphi.pdf	r1	manage	16.7 K	2016-02-06 - 15:32	AbdollahMohammadi	ggmet plots
png	LOG_Photon_dphi.png	r1	manage	123.1 K	2016-02-06 - 16:09	AbdollahMohammadi	ggmet plots PNG
pdf	LOG_Photon_iMass.pdf	r2 r1	manage	15.7 K	2016-02-06 - 15:33	AbdollahMohammadi	ZH Preselection
png	LOG_Photon_iMass.png	r1	manage	139.8 K	2016-02-06 - 16:09	AbdollahMohammadi	ggmet plots PNG
pdf	LOG_dPhiDiPhoDiMu.pdf	r1	manage	15.5 K	2016-02-06 - 15:33	AbdollahMohammadi	ZH Preselection
png	LOG_dPhiDiPhoDiMu.png	r1	manage	125.1 K	2016-02-06 - 16:08	AbdollahMohammadi	ggmet Plots PNG
pdf	LOG_dimuon_mass.pdf	r1	manage	15.3 K	2016-02-06 - 15:33	AbdollahMohammadi	ZH Preselection
png	LOG_dimuon_mass.png	r1	manage	133.1 K	2016-02-06 - 16:08	AbdollahMohammadi	ggmet Plots PNG
pdf	LOG_dimuon_pt.pdf	r1	manage	15.6 K	2016-02-06 - 15:33	AbdollahMohammadi	ZH Preselection
png	LOG_dimuon_pt.png	r1	manage	121.6 K	2016-02-06 - 16:08	AbdollahMohammadi	ggmet Plots PNG
pdf	LOG_dphi_ggMET_real.pdf	r2 r1	manage	15.5 K	2016-02-06 - 15:33	AbdollahMohammadi	ZH Preselection
png	LOG_dphi_ggMET_real.png	r1	manage	128.7 K	2016-02-06 - 16:08	AbdollahMohammadi	ggmet Plots PNG
pdf	LOG_leadingPhoton_eta.pdf	r1	manage	15.7 K	2016-02-06 - 15:32	AbdollahMohammadi	ggmet plots
pdf	LOG_leadingPhoton_pt.pdf	r2 r1	manage	15.5 K	2016-02-06 - 15:33	AbdollahMohammadi	ZH Preselection
png	LOG_leadingPhoton_pt.png	r1	manage	125.8 K	2016-02-06 - 16:08	AbdollahMohammadi	ggmet Plots PNG
pdf	LOG_masslessMT.pdf	r2 r1	manage	15.5 K	2016-02-06 - 15:33	AbdollahMohammadi	ZH Preselection
png	LOG_masslessMT.png	r1	manage	121.6 K	2016-02-06 - 16:09	AbdollahMohammadi	ggmet plots PNG
pdf	LOG_subleadingPhoton_pt.pdf	r2 r1	manage	15.3 K	2016-02-06 - 15:33	AbdollahMohammadi	ZH Preselection
png	LOG_subleadingPhoton_pt.png	r1	manage	129.5 K	2016-02-06 - 16:09	AbdollahMohammadi	ggmet plots PNG
pdf	NewSig.pdf	r1	manage	380.3 K	2016-02-08 - 06:28	AbdollahMohammadi	New Significance plots
png	NewSig.png	r1	manage	365.1 K	2016-02-08 - 06:28	AbdollahMohammadi	New Significance plots
pdf	Significance.pdf	r1	manage	15.2 K	2016-02-06 - 15:33	AbdollahMohammadi	ggmet Plots
png	Significance.png	r1	manage	123.3 K	2016-02-06 - 16:09	AbdollahMohammadi	ggmet plots PNG
pdf	Significance_withSys.pdf	r1	manage	24.3 K	2016-02-06 - 15:33	AbdollahMohammadi	ggmet Plots
png	Significance_withSys.png	r1	manage	514.8 K	2016-02-06 - 16:09	AbdollahMohammadi	ggmet plots PNG
pdf	branchingratio_ggh.pdf	r1	manage	17.6 K	2016-02-06 - 15:32	AbdollahMohammadi	ggmet plots
png	branchingratio_ggh.png	r1	manage	186.9 K	2016-02-06 - 16:08	AbdollahMohammadi	ggmet Plots PNG
pdf	exclusion_zh.pdf	r1	manage	21.0 K	2016-02-06 - 15:32	AbdollahMohammadi	ggmet plots
png	exclusion_zh.png	r1	manage	167.8 K	2016-02-06 - 16:08	AbdollahMohammadi	ggmet Plots PNG
pdf	feyn_nonres.pdf	r1	manage	62.2 K	2016-02-06 - 15:32	AbdollahMohammadi	ggmet plots
png	feyn_nonres.png	r1	manage	98.4 K	2016-02-06 - 15:55	AbdollahMohammadi
png	feyn_res-1.png	r1	manage	64.1 K	2016-02-08 - 05:58	AbdollahMohammadi	feynman resonance
pdf	feyn_res.pdf	r1	manage	62.3 K	2016-02-06 - 15:32	AbdollahMohammadi	ggmet plots

Topic revision: r6 - 2016-03-01 - AbdollahMohammadi

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