Threshold expansion of the gg(q(q)over-bar) → Q(Q)over-bar + X cross section at O(αs4)

被引：87

作者：

Beneke, Martin ^{[1
]}

Czakon, Michal ^{[1
]}

Falgari, Pietro ^{[2
]}

Mitov, Alexander ^{[3
]}

Schwinn, Christian ^{[4
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Theoret Phys E, D-52056 Aachen, Germany

[2] Univ Durham, Dept Phys, IPPP, Durham DH1 3LE, England

[3] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA

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

来源：

PHYSICS LETTERS B | 2010年 / 690卷 / 05期

基金：

美国国家科学基金会;

关键词：

NNLO; Total inclusive cross section; Top quark; Threshold expansion; COLLINEAR EFFECTIVE THEORY; PRODUCTION NEAR-THRESHOLD; HEAVY-QUARK PRODUCTION; 2-LOOPS;

D O I：

10.1016/j.physletb.2010.05.038

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We derive the complete set of velocity-enhanced heavy-quark pair production in hadronic collisions into account the effects of soft-gluon emission as that there are no enhancements due to subleading singularity. terms in the expansion of the total cross section for at next-to-next-to-leading order. Our expression takes well as that of potential-gluon exchanges. We prove soft-gluon couplings multiplying the leading Coulomb (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：483 / 490

页数：8

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