CP violation in the decays B→K(K)over-bar in the presence of D(D)over-bar⇆K(K)over-bar mixing

被引：2
|
作者：
Barshay, S [1 ]
Sehgal, LM
van Leusen, J
机构：
[1] Rhein Westfal TH Aachen, Phys Inst 3, Aachen, Germany
[2] Rhein Westfal TH Aachen, Inst Theoret Phys, D-52056 Aachen, Germany
来源：
PHYSICS LETTERS B | 2004年 / 596卷 / 3-4期
关键词：
D O I：
10.1016/j.physletb.2004.06.087
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have recently shown that the large direct CP violation observed in the decay B-0 --> pi(+)pi(-), and the enhanced branching ratio for B-0 --> pi(0)pi(0), can be understood by invoicing a small mixing of the pipi system with the dominant DD channel. We examine here the analogous effect of DD <----> KK mixing on the rare decays B-0 --> (KK0)-K-0, B- --> (K-K0) and B-0 --> K+K-. We find (a) significant values for the asymmetry parameters C and S in B-0/B-0 --> (KK0)-K-0, (b) a possible enhancement of the suppressed mode B-0 -->K+K-, (c) a correlation between the three decay channels following from a triangle relation between amplitudes A(K0K0) - A(K+K)- = A(K)-(K0). The pattern of asymmetries and branching ratios is compared with that derived from the short-distance QCD penguin interaction. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：240 / 246
页数：7
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