Finite quark-mass effects in the NNLOPS POWHEG+MiNLO Higgs generator

Keith Hamilton, Paolo Nason, Giulia Zanderighi

Research output: Contribution to journalArticlepeer-review

86 Scopus citations

Abstract

Abstract: We include finite top- and bottom-mass effects in the next-to-next-to-leading order parton shower (NNLOPS) event generator for inclusive Higgs boson production in gluon fusion based upon the POWHEG+MiNLO approach. Since fixed-order results for quark-mass effects only reach NLO accuracy, we add them to the NNLOPS generator at that accuracy. We explore uncertainties related to the unknown all-order logarithmic structure of bottom-mass effects by comparing the assumption of full exponentiation to no exponentiation at all. Phenomenological results showing the effects of finite quark-masses in the NNLOPS simulation are presented. These suggest that the aforementioned uncertainty is well contained within the envelope of plain renormalization and factorization scale uncertainties.

Original languageEnglish
Article number140
JournalJournal of High Energy Physics
Volume2015
Issue number5
DOIs
StatePublished - 1 May 2015
Externally publishedYes

Keywords

  • Monte Carlo Simulations
  • NLO Computations

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