ON THE PHASE OF EPSILON'

被引：87

作者：

GASSER, J

MEISSNER, UG

机构：

[1] Institut für Theoretische Physik, Universität Bern

来源：

PHYSICS LETTERS B | 1991年 / 258卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(91)91235-N

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We evaluate the pi-pi phase shifts delta-l(I) = 0,1 to one loop in chiral perturbation theory and determine the phase of the parameter epsilon', which measures direct CP violation in K --> 2-pi decays. The result is phi (epsilon') = 45-degrees +/- 6-degrees.

引用

页码：219 / 224

页数：6

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