Constraining new physics with the Fermilab measurement of CP violation in B→ψKs

被引：26

作者：

Barenboim, G ^{[1
]}

Eyal, G

Nir, Y

机构：

[1] Univ Mainz, Inst Phys Theoret Elementarteilchenphys, D-55099 Mainz, Germany

[2] Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.83.4486

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recently, the CDF Collaboration has reported a measurement of the CP asymmetry in the B --> psi K-s decay: a(psi K), = 0.74(-0.44)(+0.44). We analyze the constraints that follow from this measurement on the size and the phase of contributions from new physics to B-B mixing. Defining the relative phase between the full Mt:! amplitude and the standard model contribution to be 2 theta(d), we find a new bound: sin2 theta(d) greater than or similar to -0.6 (-0.87) at 1 sigma (95% C.L.). Further implications for the CP asymmetry in semileptonic B decays are discussed.

引用

页码：4486 / 4489

页数：4

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