Effective lifetimes of Bs decays and their constraints on the Bs0-(B)over-bars0 mixing parameters

被引：0

作者：

Fleischer, Robert ^{[1
]}

Knegjens, Robert ^{[1
]}

机构：

[1] Nikhef, NL-1098 XG Amsterdam, Netherlands

来源：

EUROPEAN PHYSICAL JOURNAL C | 2011年 / 71卷 / 11期

关键词：

CP VIOLATION; STRATEGIES; B-S(0); GAMMA;

D O I：

10.1140/epjc/s10052-011-1789-9

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：

Measurements of the effective lifetimes of B-s-meson decays, which only require untagged rate analyses, allow us to probe the width difference Delta Gamma(s) and the CP-violating phase phi(s) of B-s(0)-(B) over bar (0)(s) mixing. We point out that the dependence of the effective lifetime on non-linear terms in Delta Gamma(s) allows for a determination of phi(s) and Delta Gamma(s) given a pair of Bs decays into CP-even and CP-odd final states. Using recent lifetime measurements of B-s(0). K+K- and B-s(0) -> J/psi f(0) (980) decays, we illustrate this method and show how it complements the constraints in the phi(s)-Delta Gamma(s) plane from other observables.

引用

页码：1 / 8

页数：8

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