STUDYING EPSILON'/EPSILON IN THE CHIRAL QUARK-MODEL - GAMMA(5)-SCHEME INDEPENDENCE AND NLO HADRONIC MATRIX-ELEMENTS

被引：71

作者：

BERTOLINI, S

EEG, JO

FABBRICHESI, M

机构：

[1] SCUOLA INT SUPER STUDI AVANZATI,I-34013 TRIESTE,ITALY

[2] CERN,DIV THEORY,CH-1211 GENEVA 23,SWITZERLAND

来源：

NUCLEAR PHYSICS B | 1995年 / 449卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0550-3213(95)00274-V

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study the CP-violating, \Delta S\ = 1 parameter epsilon'/epsilon by computing the hadronic matrix elements in the chiral quark model. We estimate in the chiral expansion the coefficients of the next-to-leading order terms that correspond to the operators Q(6) and Q(11). We consider the impact of these corrections on the value of epsilon'/epsilon. We also investigate the possibility that the chiral quark model might drastically reduce the dimensional regularization gamma(5)-scheme dependence of current evaluations of epsilon'/epsilon.

引用

页码：197 / 225

页数：29

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