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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/111325
Title: 
Search for a Higgs boson decaying into a Z and a photon in pp collisions at root s=7 and 8 TeV
Author(s): 
Institution: 
  • Yerevan Phys Inst
  • Inst Hochenergiephys 0eAW
  • Natl Ctr Particle & High Energy Phys
  • Univ Antwerp
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ISSN: 
0370-2693
Abstract: 
A search for a Higgs boson decaying into a Z boson and a photon is described. The analysis is performed using proton-proton collision datasets recorded by the CMS detector at the LHC. Events were collected at center-of-mass energies of 7 TeV and 8 TeV, corresponding to integrated luminosities of 5.0 fb(-1) and 19.6 fb(-1), respectively. The selected events are required to have opposite-sign electron or muon pairs. No excess above standard model predictions has been found in the 120-160 GeV mass range and the first limits on the Higgs boson production cross section times the H -> Z gamma branching fraction at the LHC have been derived. The observed at 95% confidence level limits are between about 4 and 25 times the standard model cross section times the branching fraction. For a standard model Higgs boson mass of 125 GeV the expected limit at the 95% confidence level is 10 and the observed limit is 9.5. Models predicting the Higgs boson production cross section times the H -> Z gamma branching fraction to be larger than one order of magnitude of the standard model prediction are excluded for most of the 125-157 GeV mass range. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
Issue Date: 
4-Nov-2013
Citation: 
Physics Letters B. Amsterdam: Elsevier Science Bv, v. 726, n. 4-5, p. 587-609, 2013.
Time Duration: 
587-609
Publisher: 
Elsevier B.V.
Keywords: 
  • CMS
  • Physics
  • Higgs
Source: 
http://dx.doi.org/10.1016/j.physletb.2013.09.057
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/111325
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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