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

A bstract 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 beh...

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Bibliographic Details
Published in:The journal of high energy physics 2014-11, Vol.2014 (11), p.1, Article 150
Main Authors: Neumann, Tobias, Wiesemann, Marius
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Elementary Particles
High energy physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
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Summary:A bstract 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.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP11(2014)150