B mixing

被引：17

作者：

Gay, C ^{[1
]}

机构：

[1] Yale Univ, Dept Phys, New Haven, CT 06511 USA

来源：

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE | 2000年 / 50卷

关键词：

B; oscillation; mixing; time dependent;

D O I：

10.1146/annurev.nucl.50.1.577

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：

The neutral B mesons, B-0 and B-s(0) can oscillate between their particle and antiparticle states owing to flavor-changing weak interactions. In recent years, techniques to detect these oscillations as a function of the meson's decay time have been developed. This article reviews the physics of flavor oscillations and summarizes theoretical predictions. The many observations that demonstrate the time dependence of B-0 - (B-0) over bar oscillations are presented along with a combined measurement of its frequency, Deltam(d) = 0.484 +/- 0.015ps(-1). The attempts to measure the B-s(0) oscillation frequency, both directly and indirectly, are then summarized, currently resulting in a limit of Deltam(s) > 14.6 ps(-1) (95% CL). Finally, values for the CKM elements \V-td\ = (3.6 +/- 0.4) X 10(-3) and \V-ts/V-td\ > 4.7 (95% CL) are extracted.

引用

页码：577 / 641

页数：65

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