Heavy-quark production in gluon fusion at two loops in QCD

被引：95

作者：

Czakon, M. ^{[2
,3
]}

Mitov, A. ^{[1
]}

Moch, S. ^{[1
]}

机构：

[1] Deutsch Elektronensynchrotron DESY, D-15738 Zeuthen, Germany

[2] Univ Wurzburg Hubland, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany

[3] Silesian Univ, Inst Phys, Dept Field Theory & Particle Phys, PL-40007 Katowice, Poland

来源：

NUCLEAR PHYSICS B | 2008年 / 798卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/j.nuclphysb.2008.02.001

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：

We present the two-loop virtual QCD corrections to the production of heavy quarks in gluon fusion. The results are exact in the limit when all kinematical invariants are large compared to the mass of the heavy quark up to terms suppressed by powers of the heavy-quark mass. Our derivation uses a simple relation between massless and massive QCD scattering amplitudes as well as a direct calculation of the massive amplitude at two loops. The results presented here together with those obtained previously for quark-quark scattering form important parts of the next-to-next-to-leading order QCD corrections to heavy-quark production in hadron-hadron collisions. (c) 2008 Published by Elsevier B.V.

引用

页码：210 / 250

页数：41

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