The calculation of the two-loop spin splitting functions P-ij((1))(x)

被引：275

作者：

Mertig, R ^{[1
]}

vanNeerven, WL ^{[1
]}

机构：

[1] LEIDEN UNIV,INST LORENTZ,2300 RA LEIDEN,NETHERLANDS

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1996年 / 70卷 / 04期

关键词：

D O I：

10.1007/s002880050138

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 present the calculation of the two-loop spin splitting functions P-ij((1))(x)(i,j = q, g) contributing to the next-to-leading order corrected spin structure function g(1) (x, Q(2)). These splitting functions, which are presented in the <(MS)over bar> scheme, are derived from the order alpha(s)(2) contribution to the anomalous dimensions gamma(ij)(m)(i,j = q, g). The latter correspond to the local operators which appear in the operator product expansion of two electromagnetic currents. Some of the properties of the anomalous dimensions will be discussed. In particular our findings are in agreement with the supersymmetric relation gamma(qq)(m) + gamma(gq)(m) - gamma(qg)(m) - gamma(gg)(m) = 0 up to order alpha(s)(2).

引用

页码：637 / 653

页数：17

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