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arXiv 1902.02138hep-phhep-ex
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三体强子$B$和$D$衰变振幅的参数化

Parametrizations of three-body hadronic $B$- and $D$-decay amplitudes

B. Loiseau, D. Boito, J. -P. Dedonder, B. El-Bennich, R. Escribano, R. Kamiński, L. Leśniak

摘要:

简要回顾了我们最近在三体强子弱$B$和$D$衰变振幅参数化方面的工作。这里的末态由三个轻介子组成,即不同电荷的$πππ$、$Kππ$和$KK\bar K$态。这些参数化来自以前的计算的基础上的准两体因式分解方法,其中的两体强子末态相互作用充分考虑在酉$S$ -和$P$ -波$ππ$,$πK$和$K \bar K$的形状因子。它们是一种替代的等压模型的描述,可以是有用的CP不对称的解释。

英文摘要:

A short review of our recent work on amplitude parametrizations of three-body hadronic weak $B$ and $D$ decays is presented. The final states are here composed of three light mesons, namely the various charge $πππ$, $Kππ$ and $KK\bar K$ states. These parametrizations are derived from previous calculations based on a quasi-two-body factorization approach where the two-body hadronic final state interactions are fully taken into account in terms of unitary $S$- and $P$-wave $ππ$, $πK$ and $K \bar K$ form factors. They are an alternative to the isobar-model description and can be useful in the interpretation of CP asymmetries.

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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