Chiral structure of nucleon gravitational form factors

被引：57

作者：

Belitsky, AV ^{[1
]}

Ji, X ^{[1
]}

机构：

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

来源：

PHYSICS LETTERS B | 2002年 / 538卷 / 3-4期

关键词：

nucleon spin structure; chiral perturbation theory; form factors;

D O I：

10.1016/S0370-2693(02)02025-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the low momentum behavior of nucleon gravitational form factors in the framework of the heavy baryon chiral perturbation theory. At zero recoil they determine the momentum and spin apportion between nucleon constituents. Our result provides an insight into the response of the nucleon's pion cloud to an external weak gravitational field and establishes a theoretical framework for extrapolation of experimental and lattice data on the nucleon form factors to zero momentum transfer. We also discuss form factors corresponding to higher-rank tensor currents related to the moments of generalized parton distributions. (C) 2002 Published by Elsevier Science B.V.

引用

页码：289 / 297

页数：9

共 23 条

[1] Chiral corrections to matrix elements of twist-2 operators [J].