LINEAR SIGMA MODEL IN ONE-QUARK-LOOP ORDER AND THE LOW-ENERGY THEOREM FOR THE A1 -]PI(PI-PI)S-WAVE DECAY

被引：17
|
作者：
IVANOV, AN
NAGY, M
SCADRON, MD
机构：
[1] SLOVAK ACAD SCI, INST PHYS, CS-84248 BRATISLAVA, CZECHOSLOVAKIA
[2] UNIV ARIZONA, DEPT PHYS, TUCSON, AZ 85721 USA
来源：
PHYSICS LETTERS B | 1991年 / 273卷 / 1-2期
关键词：
D O I：
10.1016/0370-2693(91)90567-A
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Within the framework of the linear sigma model with SU (2) x SU (2) realization of chiral symmetry we prove a low-energy theorem for the a1 --> pi(pi-pi)s-wave decay amplitude, this theorem demonstrates the vanishing of the overall amplitude at the zero momentum of any interacting pion in a manner compatible with experimental data.
引用
收藏
页码：137 / 140
页数：4
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