Search for the Standard Model Higgs boson in the H→ZγH \rightarrow Z\gammaH→Zγ decay mode with pp collisions at s=\sqrt{s} =s
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| ATLAS Note | |
|---|---|
| Report number | ATLAS-CONF-2013-009 |
| Title | Search for the Standard Model Higgs boson in the HrightarrowZgammaH \rightarrow Z\gammaHrightarrowZgamma decay mode with pp collisions at sqrts=\sqrt{s} =sqrts= 7 and 8 TeV |
| Corporate Author(s) | The ATLAS collaboration |
| Collaboration | ATLAS Collaboration |
| Publication | 2013 |
| Imprint | 06 Mar 2013 |
| Number of pages | 22 |
| Note | All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/CONFNOTES/ATLAS-CONF-2013-009 |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | CERN LHC ; ATLAS |
| Free keywords | HIGGS |
| Abstract | This note presents a search for the Standard Model Higgs boson in the decay channel HrightarrowZgammaH \rightarrow Z\gammaHrightarrowZgamma, ZrightarrowℓℓZ \rightarrow ℓℓZrightarrowℓℓ, where ℓ=eℓ=eℓ=e or mu\mumu, using 20.7 fb−1fb^{−1}fb−1 of proton-proton collisions at sqrts=\sqrt{s} =sqrts= 8 TeV and 4.6 fb−1fb^{−1}fb−1 of proton-proton collisions at sqrts=7\sqrt{s}=7sqrts=7 TeV recorded with the ATLAS detector at the LHC. The distribution of the difference Deltam\Delta mDeltam between the final state three-body invariant mass mℓℓgammam_{ℓℓ\gamma}mℓℓgamma and the di-lepton invariant mass mℓℓm_{ℓℓ}mℓℓ is compared to Standard Model background expectations. No significant deviation from the SM prediction is observed and upper limits on the cross section of a Higgs boson with a mass between 120 and 150 GeV are derived. The expected exclusion limits at 95% confidence level range between 7.3 and 22 times the predicted Standard Model cross section. The observed exclusion limits range between 5.4 and 37 times the Standard Model cross section. For a Higgs boson mass of 125 GeV, the expected and observed limits are 13.5 and 18.2 times the Standard Model, respectively. |
| Copyright/License | Preprint: (License: CC-BY-4.0) |
Corresponding record in: Inspire
Record created 2013-03-06, last modified 2021-04-18