ON THE VANISHING OF EVANESCENT OPERATORS IN 2-LOOP NON-LEADING QCD CORRECTIONS TO WEAK PROCESSES

被引：2
|
作者：
WHITE, H
机构：
[1] Department of Mathematics, University of the West Indies, Mona
来源：
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS | 1995年 / 108卷 / 01期
关键词：
D O I：
10.1007/BF02814862
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 consider the renormalization of local operators in two-loop non-leading QCD corrections to weak processes. Evanescent (or E-) operators which vanish for n = 4 are produced, n being the dimension of the Feynman integrals. In the minimal subtraction scheme, the renormalized E-operators do not vanish for n = 4, and we present a modified scheme to remedy this, keeping the definition of the physical operators, and their two-loop anomalous dimension unaltered.
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页码：117 / 122
页数：6
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