Two-loop QCD vertices and three-loop MOM β functions

被引：44
|
作者：
Chetyrkin, KG
Seidensticker, T
机构：
[1] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany
[2] Univ Karlsruhe, Inst Theoret Teilchenphys, D-76128 Karlsruhe, Germany
[3] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
来源：
PHYSICS LETTERS B | 2000年 / 495卷 / 1-2期
关键词：
D O I：
10.1016/S0370-2693(00)01217-X
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present numerical results for the two-loop QCD corrections to the ghost gluon vertex, the quark gluon vertex, and the triple gluon vertex in the massless limit at the symmetric point. We restrict ourselves to the tensor structures existing in the tree level. The corrections are used to examine different coupling constant definitions in momentum subtraction schemes and the corresponding three-loop beta functions. (C) 2000 Published by Elsevier Science B.V.
引用
收藏
页码：74 / 80
页数：7
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