CHIRAL PREDICTION FOR THE PI-N S-WAVE SCATTERING LENGTH-A(-) TO ORDER-O(M(PI)(4))

被引：53

作者：

BERNARD, V

KAISER, N

MEISSNER, UG

机构：

[1] TECH UNIV MUNICH, DEPT PHYS T39, D-85747 GARCHING, GERMANY

[2] UNIV BONN, INST THEORET KERNPHYS, D-53115 BONN, GERMANY

[3] INST PHYS, PHYS THEOR LAB, F-67084 STRASBOURG, FRANCE

来源：

PHYSICAL REVIEW C | 1995年 / 52卷 / 04期

关键词：

D O I：

10.1103/PhysRevC.52.2185

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 evaluate the S-wave pion-nucleon scattering length alpha(-) in the framework of heavy baryon chiral perturbation theory up-to-and-including terms of order M(pi)(4). We show that the order M(pi)(4) piece of the isovector amplitude at threshold, T-thr(-), vanishes exactly. We predict for the isovector scattering length, 0.088M(pi+)(-1)less than or equal to alpha(-)less than or equal to 0.0.96M(pi+)(-1).

引用

页码：2185 / 2187

页数：3

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