$HZ\gamma$ production at $14\mathrm{TeV}$ LHC in next-to-leading order QCD

Abstract

We investigate the process $pp\to HZ\gamma +X$ at the $\sqrt{s}=14\mathrm{TeV}$ 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 $HZ\gamma$ coupling we should consider the NLO QCD corrections and put proper constraints on lepton-pair invariant mass to reduce the background.

16pages, 7 figures

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Cited by in corpus (1)

• Gluon fusion and $b\bar{b}$ corrections to $H{W}^{+}{W}^{-}/HZZ$ production in the POWHEG-BOX