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

Burdin, Sergey ORCID: 0000-0003-4831-4132 (2014) Search for Higgs boson decays to a photon and a Z boson in pp collisions at sqrt(s)=7 and 8 TeV with the ATLAS detector. Physics Letters B, 732. pp. 8-27.

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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 View the MathML source and 20.3 fb−1 of pp collisions at View the MathML source, 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 View the MathML source at 95% confidence level.

Item Type:	Article
Additional Information:	ATLAS Collaboration author listed on published version.
Subjects:	?? QC ??
Depositing User:	Symplectic Admin
Date Deposited:	05 Aug 2015 14:12
Last Modified:	17 Dec 2022 01:30
DOI:	10.1016/j.physletb.2014.03.015
Publisher's Statement :	© 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/). Funded by SCOAP.
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/2018900