QCD radiation effects on the HH → WW → ℓνℓν signal at the LHC

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Published 6 March 2008 Published under licence by IOP Publishing Ltd
, , Citation Charalampos Anastasiou et al JHEP03(2008)017 DOI 10.1088/1126-6708/2008/03/017

1126-6708/2008/03/017

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.

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10.1088/1126-6708/2008/03/017