Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/109633
Title: 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
Authors: Santos, S. P. Amor dos 
Carvalho, J. 
Fiolhais, M. C. N. 
Galhardo, B. 
Veloso, F. 
Wolters, H. 
ATLAS Collaboration
Issue Date: 2014
Publisher: Elsevier
Serial title, monograph or event: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume: 732
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-1of pp collisions at s=7 TeV and 20.3 fb-1of 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.
URI: https://hdl.handle.net/10316/109633
DOI: 10.1016/j.physletb.2014.03.015
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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