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

被引：53
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
收藏
页码：105 / 111
页数：7
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