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

机译:在存在D(D)过酒吧<-> K(K)过酒吧混合的情况下,衰减B-> K(K)过酒吧中的CP违规

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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.
机译:我们最近发现,在衰减B-0-> pi(+)pi(-)中观察到较大的直接CP违规,而B-0-> pi(0)pi(0)的分支比提高了,可以通过将pipi系统与主要DD通道进行少量混合来理解。我们在这里检查DD <----> KK混合对稀有衰变B-0->(KK0)-K-0,B-->(K-K0)和B-0-的类似影响> K + K-。我们发现(a)B-0 / B-0->(KK0)-K-0中的不对称参数C和S的显着值,(b)抑制模式B-0-> K的可能增强+ K-,(c)从振幅A(K0K0)-A(K + K)-= A(K)-(K0)之间的三角关系得出的三个衰减通道之间的相关性。将不对称性和分支比的模式与由短距离QCD企鹅相互作用得出的模式进行比较。 (C)2004 Elsevier B.V.保留所有权利。

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