Five-loop fermion anomalous dimension for a general gauge group from four-loop massless propagators

被引：54
作者：
Baikov, P. A. [1 ]
Chetyrkin, K. G. [2 ]
Kuehn, J. H. [2 ]
机构：
[1] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, 1 2 Leninskie Gory, Moscow 119991, Russia
[2] Karlsruhe Inst Technol, Inst Theoret Teilchenphys, Wolfgang Gaede Str 1, D-726128 Karlsruhe, Germany
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2017年 / 04期
基金：
俄罗斯基础研究基金会;
关键词：
Perturbative QCD; Renormalization Group; QUARK MASS; RENORMALIZATION; ORDER; INTEGRALS;
D O I：
10.1007/JHEP04(2017)119
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 extend the O(alpha(5)(s)) result of the analytic calculation of the quark mass anomalous dimension in pQCD [1] to the case of a generic gauge group. We present explicit formulas which express the relevant renormalization constants in terms of fourloop massless propagators. We also use our result to shed new light on the old puzzle of the absence of even zetas in results of perturbative calculations for a class of physical observables.
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页数：15
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