CP violation in Bd→D+ D-, D*+ D-, D+ D*-, and D*+D*- decays -: art. no. 014010

被引：0
|
作者：
Xing, ZZ [1 ]
机构：
[1] Univ Munich, Sekt Phys, Theresienstr 37A, D-80333 Munich, Germany
来源：
PHYSICAL REVIEW D | 2000年 / 61卷 / 01期
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D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
CP asymmetries in B-d-->D+D-, D*+D-, D+D*- and D*+D*- decays are investigated with the help of the factorization approximation and isospin relations. We find that direct CP violation is governed only by the short-distance penguin mechanism, while the indirect CP asymmetries in B-d-->D+/-D*-/+ transitions may be modified due to the final-state rescattering effect. An updated numerical analysis shows that the direct CP asymmetry in B-d(o) vs (B) over bar(d)(o)-->D+D- decays can be as large as 3%. The CP-even and CP-odd contributions to the indirect CP asymmetry in B-d(o) vs (B) over bar(d)(o)-->D*-D*- decays are found to have the rates 89% and 11% respectively. some comments on the possibilities to determine the weak phase beta and to test the factorization hypothesis are also given.
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页数：7
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