Higher-order QCD effects in the Higgs to ZZ search channel at the LHC

Abstract

We present a consistent analysis of the signal as well as the irreducible background for the search of the SM Higgs boson in the ZZ decay channel at the LHC. Soft-gluons effects are resummed up to next-to-leading logarithmic accuracy, and the results are compared to those obtained with fixed order calculations and the MC@NLO event generator. The soft-gluon effects are typically modest but should be taken into account when precise predictions are demanded. Our results show that the signal over background ratio can be significantly enhanced with a cut on the transverse momentum pt(ZZ) of the ZZ pair. We also introduce a fully transverse angular variable that could give information about the CP nature of the Higgs boson.

12 pages, 8 figures. Discussion on scale uncertainties added

References in corpus (2)

• An NNLO subtraction formalism in hadron collisions and its application to Higgs boson production at the LHC
• Higgs boson production at the LHC: transverse-momentum resummation and rapidity dependence

Cited by in corpus (6)

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• QCD transverse-momentum resummation in gluon fusion processes
• Transverse-momentum resummation: a perturbative study of Z production at the Tevatron
• A positive-weight next-to-leading order simulation of weak boson pair production
• Normalizing Weak Boson Pair Production at the Large Hadron Collider
• Theoretical Status of Higgs Production at Hadron Colliders in the SM