Direct CP-violation in untagged B-meson decays

被引：11
|
作者：
Gardner, S [1 ]
机构：
[1] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA
[2] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA
来源：
PHYSICS LETTERS B | 2003年 / 553卷 / 3-4期
关键词：
D O I：
10.1016/S0370-2693(02)03263-X
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Direct CP-violation can exist in untagged, neutral B-meson decays to certain self-conjugate. hadronic final states. It can occur if the resonances which appear therein permit the identification of distinct, CP-conjugate states-in analogy to stereochemistry, we term such states "CP-enantiomers". These states permit the construction of a CP-odd amplitude combination in the untagged decay rate, which is non-zero if direct CP-violation is present. The decay B --> pi(+)pi(-)pi(0), containing the distinct CP-conjugate states rho(+)pi(-) and rho(-)pi(+), provides one such example of a CP-enantiomeric pair. We illustrate the possibilities in various multiparticle final states. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：261 / 266
页数：6
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