Top quark threshold production in γγ collision in the next-to-leading order

被引:42
|
作者
Penin, AA [1 ]
Pivovarov, AA [1 ]
机构
[1] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
基金
俄罗斯基础研究基金会;
关键词
D O I
10.1016/S0550-3213(99)00205-9
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
The total cross section of the top quark-antiquark pair production near threshold in yy collision is computed analytically up to the next-to-leading order in perturbative and non-relativistic expansion for a general photon helicity. The approximation includes the first-order corrections in the strong coupling constant and the heavy quark velocity to the non-relativistic Coulomb approximation. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:375 / 396
页数:22
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