Allbrooke, B M M, Asquith, L, Cerri, A, Chavez Barajas, C A, DeSanto, A, Salvatore, F, Santoyo Castillo, I, Suruliz, K, Sutton, M R, Vivarelli, I and The ATLAS Collaboration, (2014) 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. Physics Letters B, 732. pp. 8-27. ISSN 0370-2693
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Abstract
A search is reported for a neutral Higgs boson in the decay channel H→Zγ, Z→ℓ+ℓ− (ℓ=e,μ), using 4.5 fb−¹ of pp collisions at √s = 7 TeV and 20.3 fb−¹ of pp collisions at √s = 8 TeV, recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles, mℓℓγ, 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=8 TeV at 95% confidence level.
Item Type: | Article |
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Schools and Departments: | School of Mathematical and Physical Sciences > Physics and Astronomy |
Research Centres and Groups: | Experimental Particle Physics Research Group |
Subjects: | Q Science > QC Physics |
Depositing User: | Billy Wichaidit |
Date Deposited: | 02 May 2017 11:29 |
Last Modified: | 02 Jul 2019 19:37 |
URI: | http://sro.sussex.ac.uk/id/eprint/67594 |
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📧 Request an updateProject Name | Sussex Project Number | Funder | Funder Ref |
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ATLAS | G0275 | STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL | ST/I006048/1 |