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Search for a Higgs boson decaying into a Z and a photon in pp collisions at √ s = 7 and 8 TeV
Name
1-s2.0-S0370269313007880-main.pdf
Description
Published version
Size
989.4 KB
Format
Adobe PDF
Checksum (MD5)
ff91b1fdb6445085ed44d4d6c8b76d29
Date Issued
2013
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publisher
Elsevier BV
Citation
Chatrchyan, S., et al. "Search for a Higgs Boson Decaying into a Z and a Photon in Pp Collisions at vS=7 and 8tev." Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 726 4-5 (2013): 587-609.
Version
Final published version
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 5.0fb-1 and 19.6fb-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→Zγ 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→Zγ 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. © 2013 CERN.
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Creative Commons Attribution 3.0 unported license
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DOI of Published Version
10.1016/J.PHYSLETB.2013.09.057
