Studying indirect violation of CP, T and CPT in a B-factory

被引：65

作者：

Bañuls, MC

Bernabéu, J

机构：

[1] Univ Valencia, IFIC, Ctr Mixto, E-46100 Burjassot, Valencia, Spain

[2] Univ Valencia, Dept Fis Teor, E-46100 Burjassot, Valencia, Spain

来源：

NUCLEAR PHYSICS B | 2000年 / 590卷 / 1-2期

关键词：

D O I：

10.1016/S0550-3213(00)00548-4

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：

In this work we analyze the observable asymmetries one can build from entangled B-meson states, in order to extract information on the parameters epsilon and delta which govern indirect violation of discrete symmetries. The traditionally proposed observables, based on flavour tags, are not helpful for the study of the B-d-system, where the tiny value of Delta Gamma clears up such asymmetry effects. Our study makes instead use of CP tags in order to build new asymmetries where the different parameters can be separated out. For this separation, it is decisive to achieve a good time resolution in the measurement of entangled state decays. Nevertheless, even with no temporal information, as would be the case in a symmetric factory, it is still possible to extract some information on the symmetries of the system. We discuss both non-genuine and genuine observables, depending on whether absorptive parts can mimic or not asymmetry effects. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：19 / 36

页数：18

共 31 条

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