Higgs production via gluon fusion in the POWHEG approach in the SM and in the MSSM

Abstract

We consider the gluon fusion production cross section of a scalar Higgs boson at NLO QCD in the SM and in the MSSM. We implement the calculation in the POWHEG approach, and match the NLO-QCD results with the PYTHIA and HERWIG QCD parton showers. We discuss a few representative scenarios in the SM and MSSM parameter spaces, with emphasis on the fermion and squark mass effects on the Higgs boson distributions.

27 pages, 36 eps figures; v2: 2 eps figures added, section 3.2 expanded, version published in JHEP

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