Novel analysis of chiral loop effects in the generalized Gerasimov-Drell-Hearn sum rule

被引：54

作者：

Bernard, V ^{[1
]}

Hemmert, TR

Meissner, UG

机构：

[1] Univ Strasbourg, Phys Theor Lab, F-67084 Strasbourg, France

[2] Tech Univ Munich, Phys Dept T39, D-85747 Garching, Germany

[3] Forschungszentrum Julich, Inst Kernphys Theorie, D-52425 Julich, Germany

[4] Graz Univ, Inst Theoret Phys, A-8010 Graz, Austria

来源：

PHYSICS LETTERS B | 2002年 / 545卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(02)02584-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the chiral loop corrections to the generalized Gerasimov-Drell-Hearn sum rule of the nucleon for finite photon virtuality in the framework of a Lorentz-invariant formulation of baryon chiral perturbation theory. We perform a complete one-loop calculation and obtain significant differences to previously found results based on the heavy baryon approach for the proton and neutron spin-dependent forward Compton amplitudes. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：105 / 111

页数：7

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