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

Table of contents:

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

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)

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)

pdf Figure 2: signal selection efficiency after triggers selection v.s. mass for different signal scenarios and types

pdf Figure 3: Missing transverse distribution of signal and background for the gluon-gluon production mode

pdf Figure 4: Distribution of deltaPhi between di photon for signal and background for the gluon-gluon production mode

pdf Figure 5: MT distribution (MT of $\gamma\gamma+MET$, $\mu\mu$) of signal and backgrounds for the ZH production mode

pdf Figure 6: Photons invariant mass distribution of signal and backgrounds for the ZH production mode

pdf Figure 7: delta phi between di photon and di muons distribution of signal and backgrounds for the ZH production mode

pdf Figure 8: Di muon invariant mass distribution of signal and backgrounds for the ZH production mode

pdf Figure 9: Pt of dimuon for signal and backgrounds for the ZH production mode

pdf Figure 10: ∆φ between Diphoton and MET distribution of signal and backgrounds for the ZH production mode

pdf Figure 11: leading Photon Pt distribution of signal and backgrounds for the ZH production mode

pdf Figure 12: subleading Photon Pt distribution of signal and backgrounds for the ZH production mode

pdf Figure 13: Transverse Mass distribution of signal and backgrounds for the ZH production mode

pdf Figure 14: Significance plots for different trigger scenarios in the gluon fusion analysis, for a reference signal branching ratio of BR(h → γγ + E/T ) = 10%

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 → γγ + E/T ) = 10%

pdf Figure 16: 5σ branching ratios for the ggF channel, for resonant (in red) and non-resonant (in black) final states, using the γ + E/T trigger, for a reference signal branching ratio of BR(h → γγ + E/T ) = 10%

pdf Figure 17: Branching ratios for 95% confidence level exclusion in the ZH case, resonant and non-resonant topologies, requiring at least one photon (Nγ ≥ 1, in green and blue, respectively) and at least two photons (Nγ ≥ 2 in black and red, respectively), for a reference signal branching ratio of BR(h → γγ + E/T ) = 10% . The shaded areas correspond to a variation in systematics up to 10%

Topic attachments
I AttachmentSorted descending History Action Size Date Who Comment
PNGpng Significance.png r1 manage 123.3 K 2016-02-06 - 16:09 AbdollahMohammadi ggmet plots PNG
PDFpdf Significance.pdf r1 manage 15.2 K 2016-02-06 - 15:33 AbdollahMohammadi ggmet Plots
PNGpng Significance_withSys.png r1 manage 514.8 K 2016-02-06 - 16:09 AbdollahMohammadi ggmet plots PNG
PDFpdf Significance_withSys.pdf r1 manage 24.3 K 2016-02-06 - 15:33 AbdollahMohammadi ggmet Plots
PNGpng NewSig.png r1 manage 365.1 K 2016-02-08 - 06:28 AbdollahMohammadi New Significance plots
PDFpdf NewSig.pdf r1 manage 380.3 K 2016-02-08 - 06:28 AbdollahMohammadi New Significance plots
PNGpng LOG_subleadingPhoton_pt.png r1 manage 129.5 K 2016-02-06 - 16:09 AbdollahMohammadi ggmet plots PNG
PDFpdf LOG_subleadingPhoton_pt.pdf r2 r1 manage 15.3 K 2016-02-06 - 15:33 AbdollahMohammadi ZH Preselection
PNGpng LOG_Photon_iMass.png r1 manage 139.8 K 2016-02-06 - 16:09 AbdollahMohammadi ggmet plots PNG
PDFpdf LOG_Photon_iMass.pdf r2 r1 manage 15.7 K 2016-02-06 - 15:33 AbdollahMohammadi ZH Preselection
PNGpng LOG_Photon_dphi.png r1 manage 123.1 K 2016-02-06 - 16:09 AbdollahMohammadi ggmet plots PNG
PDFpdf LOG_Photon_dphi.pdf r1 manage 16.7 K 2016-02-06 - 15:32 AbdollahMohammadi ggmet plots
PNGpng LOG_MET.png r1 manage 142.3 K 2016-02-06 - 16:09 AbdollahMohammadi ggmet plots PNG
PDFpdf LOG_MET.pdf r2 r1 manage 15.6 K 2016-02-06 - 15:33 AbdollahMohammadi ZH Preselection
PNGpng LOG_masslessMT.png r1 manage 121.6 K 2016-02-06 - 16:09 AbdollahMohammadi ggmet plots PNG
PDFpdf LOG_masslessMT.pdf r2 r1 manage 15.5 K 2016-02-06 - 15:33 AbdollahMohammadi ZH Preselection
PNGpng LOG_leadingPhoton_pt.png r1 manage 125.8 K 2016-02-06 - 16:08 AbdollahMohammadi ggmet Plots PNG
PDFpdf LOG_leadingPhoton_pt.pdf r2 r1 manage 15.5 K 2016-02-06 - 15:33 AbdollahMohammadi ZH Preselection
PDFpdf LOG_leadingPhoton_eta.pdf r1 manage 15.7 K 2016-02-06 - 15:32 AbdollahMohammadi ggmet plots
PNGpng LOG_dPhiDiPhoDiMu.png r1 manage 125.1 K 2016-02-06 - 16:08 AbdollahMohammadi ggmet Plots PNG
PDFpdf LOG_dPhiDiPhoDiMu.pdf r1 manage 15.5 K 2016-02-06 - 15:33 AbdollahMohammadi ZH Preselection
PNGpng LOG_dphi_ggMET_real.png r1 manage 128.7 K 2016-02-06 - 16:08 AbdollahMohammadi ggmet Plots PNG
PDFpdf LOG_dphi_ggMET_real.pdf r2 r1 manage 15.5 K 2016-02-06 - 15:33 AbdollahMohammadi ZH Preselection
PNGpng LOG_dimuon_pt.png r1 manage 121.6 K 2016-02-06 - 16:08 AbdollahMohammadi ggmet Plots PNG
PDFpdf LOG_dimuon_pt.pdf r1 manage 15.6 K 2016-02-06 - 15:33 AbdollahMohammadi ZH Preselection
PNGpng LOG_dimuon_mass.png r1 manage 133.1 K 2016-02-06 - 16:08 AbdollahMohammadi ggmet Plots PNG
PDFpdf LOG_dimuon_mass.pdf r1 manage 15.3 K 2016-02-06 - 15:33 AbdollahMohammadi ZH Preselection
PNGpng LOG_AllMT.png r1 manage 115.2 K 2016-02-06 - 16:08 AbdollahMohammadi ggmet Plots PNG
PDFpdf LOG_AllMT.pdf r1 manage 15.5 K 2016-02-06 - 15:33 AbdollahMohammadi ZH Preselection
PDFpdf feyn_res.pdf r1 manage 62.3 K 2016-02-06 - 15:32 AbdollahMohammadi ggmet plots
PNGpng feyn_res-1.png r1 manage 64.1 K 2016-02-08 - 05:58 AbdollahMohammadi feynman resonance
PNGpng feyn_nonres.png r1 manage 98.4 K 2016-02-06 - 15:55 AbdollahMohammadi  
PDFpdf feyn_nonres.pdf r1 manage 62.2 K 2016-02-06 - 15:32 AbdollahMohammadi ggmet plots
PNGpng exclusion_zh.png r1 manage 167.8 K 2016-02-06 - 16:08 AbdollahMohammadi ggmet Plots PNG
PDFpdf exclusion_zh.pdf r1 manage 21.0 K 2016-02-06 - 15:32 AbdollahMohammadi ggmet plots
PNGpng Efficiencies.png r1 manage 135.9 K 2016-02-06 - 16:08 AbdollahMohammadi ggmet Plots PNG
PDFpdf Efficiencies.pdf r1 manage 15.2 K 2016-02-06 - 15:33 AbdollahMohammadi ggmet Plots
PNGpng branchingratio_ggh.png r1 manage 186.9 K 2016-02-06 - 16:08 AbdollahMohammadi ggmet Plots PNG
PDFpdf branchingratio_ggh.pdf r1 manage 17.6 K 2016-02-06 - 15:32 AbdollahMohammadi ggmet plots
Edit | Attach | Watch | Print version | History: r6 < r5 < r4 < r3 < r2 | Backlinks | Raw View | WYSIWYG | More topic actions
Topic revision: r6 - 2016-03-01 - AbdollahMohammadi
 
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    LHCPhysics All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2019 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback