Quenched chiral perturbation theory for heavy-light mesons

被引：103

作者：

Sharpe, SR

Zhang, Y

机构：

[1] Department of Physics, University of Washington, Seattle, WA

来源：

PHYSICAL REVIEW D | 1996年 / 53卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.53.5125

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We formulate quenched chiral perturbation theory for heavy-light mesons coupled to pions, and calculate the one-loop chiral logarithmic corrections to f(B), f(Bs), B-B, and B-Bs. We also calculate these corrections for ''partially quenched'' theories. In both theories, the chiral logarithms diverge in the chiral limit, indicating that (partially) quenched theories should not be used to study this limit. Comparing the chiral logarithms to those in QCD, we estimate the errors caused by (partial) quenching. By forming suitable ratios, we can reduce the uncertainties in our estimates.

引用

页码：5125 / 5135

页数：11

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