Testing the standard model with Bs0→K+K- decays -: art. no. 031502

被引：24
|
作者：
London, D
Matias, J
机构：
[1] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada
[2] Univ Montreal, Lab Rene JA Levesque, Montreal, PQ H3C 3J7, Canada
[3] Univ Autonoma Barcelona, IFAE, E-08193 Barcelona, Spain
来源：
PHYSICAL REVIEW D | 2004年 / 70卷 / 03期
关键词：
D O I：
10.1103/PhysRevD.70.031502
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In the limit of flavor SU(3) symmetry, the amplitudes for B-d(0)-->pi(+)pi(-) and B-s(0)-->K+K- are related to one another. Taking the values of the weak phases beta and gamma from independent measurements, the ratio R-d(s)=BR(B-s(0)-->K+K-)/BR(B-d(0)-->pi(+)pi(-)) and the two B-d(0)-->pi(+)pi(-) CP asymmetries A(dir) and A(mix) depend on only two quantities. By measuring these three observables, one can test for the presence of physics beyond the standard model. In this paper, using present data, and including theoretical uncertainties due to SU(3) breaking, we perform such an analysis. The experimental errors are still very large, but with improved measurements from Babar, Belle and CDF this will be a useful method to search for new physics.
引用
收藏
页码：031502 / 1
页数：4
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