Penguin decays of B mesons

被引：29

作者：

Lingel, K ^{[1
]}

Skwarnicki, T

Smith, JG

机构：

[1] Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

[2] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA

[3] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

来源：

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE | 1998年 / 48卷

关键词：

loop; CP violation; charmless;

D O I：

10.1146/annurev.nucl.48.1.253

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Penguin, or loop, decays of B mesons induce effective flavor-changing neutral currents, which are forbidden at tree level in the standard model. These decays give special insight into the CKM matrix and are sensitive to non-standard-model effects. In this review, we give a historical and theoretical introduction to penguins and a description of the various types of penguin processes: electromagnetic, electroweak, and gluonic. We review the experimental searches for penguin de cays, including the measurements of the electromagnetic penguins b --> s gamma and B --> K*gamma and gluonic penguins B --> K pi, B+ --> omega K+ and B --> eta'K, and their implications for the standard model and new physics. We conclude by exploring the future prospects for penguin physics.

引用

页码：253 / 306

页数：54

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