Higgs production via gluon fusion from kT-factorisation

Details Higgs production via gluon fusion from kT-factorisation Higgs production via gluon fusion from kT-factorisation

2010-11-29

arxiv.org/abs/1011.6157v1

AIP Conf.Proc.1350:263-266,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

Contribution to the Workshop Diffraction 2010, Otranto (Italy), September 2010

Scientific paper

10.1063/1.3601419

Theoretical studies of Higgs production via gluon fusion are frequently carried out in the limit where the top quark mass is much larger than the Higgs mass, an approximation which reduces the top quark loop to an effective vertex. We present a numerical analysis of the error thus introduced by performing a Monte Carlo calculation for gg->h in kT-factorisation, using the parton shower generator CASCADE. We proceed to compare CASCADE to the collinear Monte Carlos PYTHIA, MC@NLO and POWHEG. We study the dependence of parton radiation on the resummation of high-energy corrections taken into account by kT-factorisation, and its influence on predictions for the Higgs pT spectrum.

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