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10.1016-j.physletb.2014.03.015.pdf (1.14 MB)

Search for Higgs boson decays to a photon and a Z boson in pp collisions at vs = 7 and 8 TeV with the ATLAS detector

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journal contribution
posted on 2023-06-09, 06:01 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, A DeSanto, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, K Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, The ATLAS Collaboration
A search is reported for a neutral Higgs boson in the decay channel H?Z?, Z?l+l- (l=e,µ), using 4.5 fb-¹ of pp collisions at vs = 7 TeV and 20.3 fb-¹ of pp collisions at vs = 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, mll?, 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 vs=8 TeV at 95% confidence level.

Funding

ATLAS; G0275; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I006048/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Physics Letters B

ISSN

0370-2693

Publisher

Elsevier

Volume

732

Page range

8-27

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Experimental Particle Physics Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-05-02

First Open Access (FOA) Date

2017-05-02

First Compliant Deposit (FCD) Date

2017-05-02

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