Chiral perturbation theory for K+→π+π0 decay in the continuum and on the lattice

被引：1
|
作者：
Golterman, M [1 ]
Leung, KC [1 ]
机构：
[1] Washington Univ, Dept Phys, St Louis, MO 63130 USA
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 1998年 / 63卷
关键词：
D O I：
10.1016/S0920-5632(97)00751-2
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 use one-loop chiral perturbation theory (ChPT) to compare lattice results for the K+ --> pi(+)pi(0) decay amplitude with the experimental value. Three systematic effects: quenching, finite-volume effects, and the use of unphysical values of quark masses and pion external momenta can be investigated. We find that the corrections help in explaining the discrepancy between lattice and experimental results. We also discuss the relation to B-K.
引用
收藏
页码：296 / 298
页数：3
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