Electromagnetic corrections to the one-pion-exchange potential

被引:89
作者
van Kolck, U [1 ]
Rentmeester, MCM
Friar, JL
Goldman, T
de Swart, JJ
机构
[1] Univ Washington, Dept Phys, Seattle, WA 98195 USA
[2] Flinders Univ S Australia, Dept Phys, Bedford Pk, SA 5042, Australia
[3] Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
[4] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA
[5] Univ Nijmegen, Inst Theoret Phys, Nijmegen, Netherlands
关键词
D O I
10.1103/PhysRevLett.80.4386
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Leading-order electromagnetic loop corrections to the one-pion-exchange potential are computed within the framework of chiral perturbation theory. These corrections generate an effective nucleon-nucleon potential, V-pi gamma, which supplements the sum of one-pion-exchange potential and the nucleon-nucleon Coulomb potential. This potential is charge dependent and its construction is demonstrated to be gauge invariant. The potential V-pi gamma has been included in the Nijmegen partial-wave analysis of np data. A particular renormalization scheme is chosen that lends to a negligible change in the pi(+/-)NN coupling constant and in the np S-1(0) scattering length and effective range.
引用
收藏
页码:4386 / 4389
页数:4
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