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arXiv 0709.3734hep-ph
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共振手征理论下τ轻子到K-K π介子模的强子衰变

Hadronic decays of the tau lepton into K K pion modes within Resonance Chiral Theory

Pablo Roig

摘要:

Tau衰变为强子具有双重意义:一方面,它们为研究QCD左手流的强子化提供了干净的环境,另一方面,它们提供了介导这些过程的共振的相关动力学信息。在一个类似有效场论的框架内,即共振手征理论,我们分析了τ衰变到K-K π介子模,并将结果与CLEO和BaBar的数据进行了比较。通过这种方式,我们提供了进入拉格朗日量的耦合的界限,并预测了相应的谱函数。作为一个主要的结果-和相反的大量的理论研究和实验分析-我们发现矢量电流占主导地位的这些衰变。

英文摘要:

Tau decays into hadrons have a twofold interest: On the one hand, they are a clean environment for studying the hadronization of the left-handed current of QCD, while, on the other side, provide relevant dynamical information of the resonances that mediate these processes. Within an effective field theory-like framework, namely Resonance Chiral Theory, we analyse the decays ot the tau into K K pion modes and compare the results with CLEO and BaBar data. In this way, we provide bounds on the couplings entering our Lagrangian and predict the corresponding spectral functions. As a main result -and contrary to the bulk of theoretical studies and experimental analyses- we find vector current dominance on 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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