Implications of eta eta' mixing for the decay eta->3 pi

被引：50

作者：

Leutwyler, H ^{[1
]}

机构：

[1] CERN,CH-1211 GENEVA,SWITZERLAND

来源：

PHYSICS LETTERS B | 1996年 / 374卷 / 1-3期

关键词：

D O I：

10.1016/0370-2693(96)00167-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Taken by itself, the interference with the eta' appears to strongly affect the amplitude of the transition eta --> 3 pi.I point out that this effect is fictitious and also occurs in the mass spectrum of the pseudoscalars. Chiral symmetry implies that the same combination of effective coupling constants which determines the small deviations from the Gell-Mann-Okubo formula also specifies the symmetry breaking effects in the decay amplitude and thus ensures that these are small.

引用

页码：181 / 185

页数：5

共 50 条

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