Search for a Higgs boson decaying into a Z and a photon in pp collisions at sqrt(s) = 7 and 8 TeV - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physics Letters B Year : 2013

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

S. Chatrchyan
  • Function : Author
Pierre Busson
R. Granier de Cassagnac
C. Mironov
P. Paganini
J.-L. Agram
C. Collard
E. Conte
P. van Hove
D. Contardo
M. Gouzevitch
M. Lethuillier
V. Sordini
P. Verdier
S. Viret

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.

Dates and versions

in2p3-00847192 , version 1 (23-07-2013)

Identifiers

Cite

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, 2013, 726, pp.587-609. ⟨10.1016/j.physletb.2013.09.057⟩. ⟨in2p3-00847192⟩
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