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arXiv 1102.5426hep-ph
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$D\to Kπlν$衰变中的末态相互作用

Final state interactions in $D\to Kπlν$ decay

Xian-Wei Kang, Hai-Bo Li, Gong-Ru Lu

摘要:

半轻子$D_{l4}$衰变包括$D\to Kπlν$和$D\to ππlν$已被广泛研究。在这些参考文献中,明确地陈述了形状因子和微分衰减率。然而,我们想强调的是,在这些文件中的最终状态的相互作用往往被忽视,即由$D_{l4}$衰变产生的赝标量的再散射效应可能是非常重要的,至少在一侧的相位的形状因子由于沃森定理。本文将在重强子手征微扰理论的框架下展示这种再散射效应,这是对以往关于$D_{l4}$研究的一个非常有用和不可缺少的补充。

英文摘要:

The semileptonic $D_{l4}$ decay including $D\to Kπlν$ and $D\to ππlν$ have been extensively studied. In these references, the form factors and differential decay rate are explicitly stated. However, we would like to stress that in these papers the final state interactions are often overlooked, i.e. rescattering effect of the pseudoscalars produced by $D_{l4}$ decay may be very important, at least on the side of phase of form factors due to Watson's theorem. In this short paper, we will display this rescattering effect in the framework of heavy hadron chiral perturbation theory, it thus must be a very useful and indispensable supplement of the previous papers on $D_{l4}$ study.

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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