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Gluon-induced Higgs-strahlung at next-to-leading order QCD
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Gluon-induced Higgs-strahlung at next-to-leading order QCD
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Journal Article
Gluon-induced Higgs-strahlung at next-to-leading order QCD
2013
Overview
A
bstract
Gluon-induced contributions to the associated production of a Higgs and a Z boson are calculated with NLO accuracy in QCD. They constitute a significant contribution to the cross section for this process. The perturbative correction factor (
K
-factor) is calculated in the limit of infinite top-quark and vanishing bottom-quark masses. The qualitative similarity of the results to the well-known ones for the gluon-fusion process gg → H allows to conclude that rescaling the LO prediction by this
K
-factor leads to a reliable NLO result and realistic error estimate due to missing higher-order perturbative effects. We consider the total inclusive cross section as well as a scenario with a boosted Higgs boson, where the Higgs boson’s transverse momentum is restricted to values
p
T,H
>
200 GeV. In both cases, we find large correction factors
K
≈ 2 in most of the parameter space.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
Subject
