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

Keith Hamilton; Paolo Nason; Giulia Zanderighi

doi:10.1007/JHEP05(2015)140

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

Keith Hamilton, Paolo Nason, Giulia Zanderighi

Research output: Contribution to journal › Article › peer-review

98 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 language	English
Article number	140
Journal	Journal of High Energy Physics
Volume	2015
Issue number	5
DOIs	https://doi.org/10.1007/JHEP05(2015)140
State	Published - 1 May 2015
Externally published	Yes

Keywords

Monte Carlo Simulations
NLO Computations

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10.1007/JHEP05(2015)140

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title = "Finite quark-mass effects in the NNLOPS POWHEG+MiNLO Higgs generator",

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.",

keywords = "Monte Carlo Simulations, NLO Computations",

author = "Keith Hamilton and Paolo Nason and Giulia Zanderighi",

note = "Publisher Copyright: {\textcopyright} 2015, The Author(s).",

year = "2015",

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T1 - Finite quark-mass effects in the NNLOPS POWHEG+MiNLO Higgs generator

AU - Hamilton, Keith

AU - Nason, Paolo

AU - Zanderighi, Giulia

PY - 2015/5/1

Y1 - 2015/5/1

N2 - 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.

AB - 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.

KW - Monte Carlo Simulations

KW - NLO Computations

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DO - 10.1007/JHEP05(2015)140

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VL - 2015

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 5

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ER -

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

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Keywords

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