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Search for a Higgs boson decaying into a Z and a photon in pp collisions at sqrt(s) = 7 and 8 TeV

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 and 19.6 inverse femtobarns, respectively. The selected events are required to have opposite-sign electron or muon pairs with an invariant mass greater than 50 GeV. 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 to Z gamma branching fraction at the LHC have been derived. The observed limits are between about 4 and 25 times the standard model cross section times the branching fraction. The observed and expected limits for m[ll gamma]at 125 GeV are within one order of magnitude of the standard model prediction.
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http://hal.in2p3.fr/in2p3-00847192
Contributor : Sylvie Flores <>
Submitted on : Tuesday, July 23, 2013 - 7:33:43 AM
Last modification on : Friday, June 5, 2020 - 10:52:06 AM

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S. Chatrchyan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Search for a Higgs boson decaying into a Z and a photon in pp collisions at sqrt(s) = 7 and 8 TeV. Physics Letters B, Elsevier, 2013, 726, pp.587-609. ⟨10.1016/j.physletb.2013.09.057⟩. ⟨in2p3-00847192⟩

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