THE OFF-SHELL ELECTROMAGNETIC VERTEX OF THE NUCLEON IN CHIRAL PERTURBATION-THEORY

被引：22

作者：

BOS, JW

KOCH, JH

机构：

[1] UNIV AMSTERDAM,INST THEORET PHYS,1018 XE AMSTERDAM,NETHERLANDS

[2] UNIV AMSTERDAM,NIKHEF K,1018 XE AMSTERDAM,NETHERLANDS

来源：

NUCLEAR PHYSICS A | 1993年 / 563卷 / 04期

关键词：

D O I：

10.1016/0375-9474(93)90054-2

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We study the electromagnetic vertex of a nucleon in next-to-leading order chiral perturbation theory (CPT). We consider the case where one of the nucleons at the gammaNN vertex is off its mass shell. We define relevant measures for the off-shell dependence in the limited kinematical range allowed, and analyze their expansion in the pion mass. The leading nonanalytic contributions are calculated to estimate their size.

引用

页码：539 / 548

页数：10

共 15 条

[1] ON THE LOW-ENERGY THEOREMS FOR THRESHOLD PION ELECTROPRODUCTION [J].