QCD radiation effects on the H->WW->l nu l nu signal at the LHC

Abstract

The discovery of a Standard Model Higgs boson is possible when experimental cuts are applied which increase the ratio of signal and background cross-sections. In this paper we study the pp->H->WW signal cross-section at the LHC which requires a selection of Higgs bosons with small transverse momentum. We compare predictions for the efficiency of the experimental cuts from a NNLO QCD calculation, a calculation of the resummation of logarithms in the transverse momentum of the Higgs boson at NNLL, and the event generator MC@NLO. We also investigate the impact of various jet-algorithms, the underlying event and hadronization on the signal cross-section.

16 pages, 14 figures, added references, results update

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Cited by in corpus (12)

• An Automated Implementation of On-Shell Methods for One-Loop Amplitudes
• NNLO predictions for the Higgs boson signal in the H->WW->lnu lnu and H->ZZ->4l decay channels
• Measuring the Higgs Sector
• The fully differential hadronic production of a Higgs boson via bottom quark fusion at NNLO
• The two-loop QCD amplitude gg -> h,H in the Minimal Supersymmetric Standard Model
• The one-loop gluon amplitude for heavy-quark production at NNLO
• Electroweak and finite quark-mass effects on the Higgs boson transverse momentum distribution
• Perturbative QCD effects and the search for a H->WW->l nu l nu signal at the Tevatron
• Normalizing Weak Boson Pair Production at the Large Hadron Collider
• Understanding the Standard Model, as a bridge to the discovery of new phenomena at the LHC
• Review of Physics Results from the Tevatron: Higgs Boson Physics
• Recent theoretical progress in perturbative QCD