Helicity-flip off-forward parton distributions of the nucleon

被引：113

作者：

Hoodbhoy, P ^{[1
]}

Ji, XD ^{[1
]}

机构：

[1] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW D | 1998年 / 58卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.58.054006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We identify quark and gluon helicity-flip distributions defined between nucleon states of unequal momenta. The evolution of these distributions with a change of renormalization scale is calculated in the leading-logarithmic approximation. The helicity-flip gluon distributions do not mix with any quark distribution and are thus a unique signature of gluons in the nucleon. Their contribution to the generalized virtual Compton process is obtained both in the form of a factorization theorem and an operator product expansion. In deeply virtual Compton scattering, they can be probed through the distinct angular dependence of the cross section. [S0556-2821(98)04815-2].

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页数：10

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