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Finite top-mass effects in gluon-induced Higgs production with a jet-veto at NNLO


Neumann, Tobias; Wiesemann, Marius (2014). Finite top-mass effects in gluon-induced Higgs production with a jet-veto at NNLO. Journal of High Energy Physics, 2014(11):1-22.

Abstract

Effects from a finite top quark mass on the H+ n-jet coss section through gluon fusion are studied for n = 0 /n ≥ 1 at NNLO/NLO QCD. For this purpose, sub-leading terms in 1 /m t are calculated. We show that the asymptotic expansion of the jet-vetoed cross section at NNLO is very well behaved and that the heavy-top approximation is valid at the five permille level up to jet-veto cuts of 300 GeV. For the inclusive Higgs+jet rate, we introduce a matching procedure that allows for a reliable prediction of the top-mass effects using the expansion in 1 /m t . The quality of the effective field theory to evaluate differential K-factors for the distribution of the hardest jet is found to be better than 1-2% as long as the transverse momentum of the jet is integrated out or remains below about 150 GeV.

Abstract

Effects from a finite top quark mass on the H+ n-jet coss section through gluon fusion are studied for n = 0 /n ≥ 1 at NNLO/NLO QCD. For this purpose, sub-leading terms in 1 /m t are calculated. We show that the asymptotic expansion of the jet-vetoed cross section at NNLO is very well behaved and that the heavy-top approximation is valid at the five permille level up to jet-veto cuts of 300 GeV. For the inclusive Higgs+jet rate, we introduce a matching procedure that allows for a reliable prediction of the top-mass effects using the expansion in 1 /m t . The quality of the effective field theory to evaluate differential K-factors for the distribution of the hardest jet is found to be better than 1-2% as long as the transverse momentum of the jet is integrated out or remains below about 150 GeV.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Date:2014
Deposited On:05 Feb 2015 10:01
Last Modified:05 Apr 2016 18:59
Publisher:Springer
ISSN:1029-8479
Publisher DOI:https://doi.org/10.1007/JHEP11(2014)150

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