HZγ production at 14 TeV LHC in next-to-leading order QCD

Original · EN

We investigate the process pp → HZγ+ X at the √s=14 TeV LHC up to the QCD next-to-leading order (NLO), and discuss the kinematic distributions of final products after on-shell Higgs and Z-boson decays by adopting the narrow width approximation. The dependence of the leading order (LO) and the QCD NLO corrected integrated cross sections on the factorization/renormalization scale is studied. Our results show that the LO integrated cross section and kinematic distributions are significantly enhanced by the NLO QCD corrections, and the NLO QCD K-factor strongly depends on the observables and phase space. We conclude that in precision experimental data analyse for probing the HZγ coupling we should consider the NLO QCD corrections and put proper constraints on lepton-pair invariant mass to reduce the background.