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EnglishA search is reported for a neutral Higgs boson in the decay channel H→Zγ,Z→l+l-(l=e,μ), using 4.5fb−1 of pp collisions at √s=7 TeV and 20.3fb−1 of pp collisions at √s=8TeV, recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles,mγ, is consistent with the Standard Model hypothesis in the investigated mass range of 120–150 GeV. For a Higgs boson with a mass of 125.5 GeV, the observed upper limit at the 95% confidence level is 11 times the Standard Model expectation. Upper limits are set on the cross section times branching ratio of a neutral Higgs boson with mass in the range 120–150 GeV between 0.13 and 0.5 pb for √s=8TeV at 95% confidence level.
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| Titolo: | Search for Higgs boson decays to a photon and a Z boson in pp collisions at √s=7 and 8 TeV with the ATLAS detector | |
| Autori: | ||
| Data di pubblicazione: | 2014 | |
| Rivista: | ||
| Abstract: | A search is reported for a neutral Higgs boson in the decay channel H→Zγ,Z→l+l-(l=e,μ), using 4.5fb−1 of pp collisions at √s=7 TeV and 20.3fb−1 of pp collisions at √s=8TeV, recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles,mγ, is consistent with the Standard Model hypothesis in the investigated mass range of 120–150 GeV. For a Higgs boson with a mass of 125.5 GeV, the observed upper limit at the 95% confidence level is 11 times the Standard Model expectation. Upper limits are set on the cross section times branching ratio of a neutral Higgs boson with mass in the range 120–150 GeV between 0.13 and 0.5 pb for √s=8TeV at 95% confidence level. | |
| Handle: | http://hdl.handle.net/11571/850856 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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