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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1905.06322hep-ph
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Tau衰变成两个介子:综述

Tau decays into two mesons: an overview

Sergi Gonzàlez-Solís

摘要:

我们回顾了τ衰变为一对介子和一个中微子的最新理论分析。在共振态和色散关系相补充的手征微扰理论框架下描述了参与者的矢量和标量形状因子$f_{+}(s)$和$f_{0}(s)$,并通过$f_{+,0}(s)$在复平面上的极点位置提取了衰变过程中产生的中间共振态的物理参数.作为一个副作用,我们还确定了与形状因子相关的低能量观测值。我们希望我们的研究是感兴趣的,目前和未来的实验分析这些衰变。

英文摘要:

We review the state-of-the-art theoretical analyses of tau decays into a pair of mesons and a neutrino. The participant vector and scalar form factors, $f_{+}(s)$ and $f_{0}(s)$, are described in the frame of Chiral Perturbation Theory with resonances supplemented by dispersion relations, and the physical parameters of the intermediate resonances produced in the decay are extracted through the pole position of $f_{+,0}(s)$ in the complex plane. As a side result, we also determine the low-energy observables associated to the form factors. We hope our study to be of interest for present and future experimental analyses of these decays.

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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