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

delete2000-12-01
delete47
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OA
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K
K.G. Chetyrkin
T
T. Seidensticker
DOI：10.1016/S0370-2693(00)01217-Xdelete
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Abstract

Abstract

En 中文
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.
Keywords:
ASYMPTOTIC-BEHAVIOR
2-LOOP ORDER
RENORMALIZATION
DIAGRAMS
VERTEX
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Journal

Physics Letters B cover
Physics Letters B
IF:
4.5
Papers:
3.2W
Citations:
7.3W

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