Enhanced direct CP violation in Β±,0→π+π-Κ±,0 -: art. no. 096008

被引：8

作者：

Leitner, O ^{[1
]}

Guo, XH

Thomas, AW

机构：

[1] Univ Adelaide, Dept Phys & Math Phys, Adelaide, SA 5005, Australia

[2] Univ Adelaide, Special Res Ctr Subatom Struct Matter, Adelaide, SA 5005, Australia

[3] Univ Clermont Ferrand, CNRS, IN2P3, Phys Corpusculaire Lab, F-63177 Clermont Ferrand, France

来源：

PHYSICAL REVIEW D | 2002年 / 66卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.66.096008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate in a phenomenological way direct CP violation in the hadronic decays B-+/-,B-0-->pi(+)pi(-)K(+/-,0) where the effect of rho-omega mixing is included. If N-c(eff) (the effective parameter associated with factorization) is constrained using the most recent experimental branching ratios (to rho(0)K(0), rho(+/-)K(-/+), rho(+/-)K(0), rho(0)K(+/-) and omegaK(+/-)) from the BABAR, BELLE and CLEO Collaborations, we get a maximum CP violating asymmetry a(max) in the range -25% to +49% for B--->pi(+)pi(-)K(-) and -24% to +55% for (B) over bar (0)-->pi(+)pi(-)(K) over bar (0). We also find that CP violation is strongly dependent on the Cabibbo-Kobayashi-Maskawa matrix elements. Finally, we show that the sign of sin delta is always positive in the allowed range of N-c(eff) and hence, a measurement of direct CP violation in B-+/-,B-0-->pi(+)pi(-)K(+/-,0) would remove the mod(pi) ambiguity in arg[-VtsVtbstar/VusVubstar].

引用

页数：19

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