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arXiv 0708.0119hep-ph
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B-->pi eta('),K eta('),eta(')eta(')衰变的求和规则

Sum rules for B-->pi eta('), K eta('), eta(') eta(') decays

Rafel Escribano, Joaquim Matias, Javier Virto

摘要:

我们提供了一组求和规则,使用味对称性,将不同中性和带电B介子的CP平均比和CP不对称性与π介子、K介子或第二个η(')一起衰变成η(')粒子联系起来。这些规则使我们能够预测B^0-->K^0 η分支比。我们还预测了两个B^0-->pi^0(eta,eta ')CP-不对称性之间存在明显的符号反相关,并发现了三个B-->eta(')eta(')衰变模式的分支比和CP-不对称性的联合约束。

英文摘要:

We provide a set of sum rules, using flavour symmetries, relating CP-averaged ratios and CP asymmetries of different neutral and charged B mesons decaying into an eta(') particle together with a pion, a kaon or a second eta('). These sume rules allow us to give a prediction for the B^0-->K^0 eta branching ratio. We also predict a clear sign anti-correlation between the two B^0-->pi^0 (eta,eta') CP-asymmetries, and find a combined constraint on the branching ratios and CP-asymmetries of the three B-->eta(')eta(') decay modes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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