MENDED CHIRAL SYMMETRY AND THE LINEAR SIGMA-MODEL IN ONE-LOOP ORDER

被引：12

作者：

SCADRON, MD

机构：

来源：

MODERN PHYSICS LETTERS A | 1992年 / 7卷 / 06期

关键词：

D O I：

10.1142/S0217732392000458

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is shown that the linear sigma-model in one-loop order in the chiral limit recovers meson masses m(pi) = 0, m(sigma) = 2m(qk) (NJL), m(rho) = square-root 2 g(rho)f(pi) (KSRF), along with couplings g(sigma-pi-pi) = m(sigma)2/2f(pi), g(rho-pi-pi) = g(rho) (VMD universality) and Weinberg's mended chiral symmetry decay width relation GAMMA(sigma) = (9/2)GAMMA(rho). The linear sigma-model combined quark and meson loops also properly predict the radiative decays pi(0) --> 2(gamma), pi --> e-nu-gamma and delta(0)(983) --> 2(gamma).

引用

页码：497 / 505

页数：9