Gluon-induced Higgs-strahlung at next-to-leading order QCD

被引：122

作者：

Altenkamp, Lukas ^{[1
]}

Dittmaier, Stefan ^{[1
]}

Harlander, Robert V. ^{[2
]}

Rzehak, Heidi ^{[1
,3
]}

Zirke, Tom J. E. ^{[2
]}

机构：

[1] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany

[2] Berg Univ Wuppertal, Fachbereich C, D-42097 Wuppertal, Germany

[3] CERN, Div TH, Dept Phys, CH-1211 Geneva 23, Switzerland

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 02期

关键词：

NLO Computations; Hadronic Colliders; RADIATIVE-CORRECTIONS; PARTON DISTRIBUTIONS; LOOP CALCULATIONS; BOSON PRODUCTION; FUSION; RENORMALIZATION; REDUCTION; FEYNARTS; PACKAGE; DECAY;

D O I：

10.1007/JHEP02(2013)078

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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 in finite 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 approximate to 2 in most of the parameter space.

引用

页数：27

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