期刊
PHYSICAL REVIEW D
卷 78, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.78.111501
关键词
-
资金
- RTN European Program [MRTN-CT-2004-503369]
Using isospin relations, we predict the standard model correlation between S K-0(pi)S equivalent to (sin2 beta)(pi)K-0(S) and A(pi)(0)K(S), the mixing-induced and direct CP asymmetries of B-0 -> pi K-0(S). The calculation uses flavor SU(3) only to fix the isospin-3/2 amplitude through the B-+/- -> pi(+/-)pi(0) branching ratio, and thus has a small irreducible theoretical error. It can reach percent level precision thanks to expected future lattice-QCD progress for the calculation of the relevant SU(3)-breaking form-factor ratio, and serves as a benchmark for new-physics searches. We obtain an interesting picture in the A(pi)(0)K(S)-(S pi KS)-K-0 plane, where the current experimental data show a discrepancy with the standard model, and comment on the direct CP asymmetries of B-0 -> pi K--(+) and B+ -> pi K-0(+). A modified electroweak penguin with a large new CP-violating phase can explain the discrepancy and allows us to accommodate also the corresponding data for other b -> s penguin-dominated decays.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据