arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0907.5540hep-phhep-ex
收藏

共振手征理论中的强子τ衰变为二介子和三介子模

Hadronic tau decays into two and three meson modes within Resonance Chiral Theory

P. Roig

摘要:

我们在共振手征理论的框架下研究了τ轻子的二介子和三介子衰变,该理论基于QCD的下列性质:无质量情况下的手征对称性,大N_C极限,以及它对相关形状因子的渐近行为。拉格朗日量中的大多数耦合都是这样确定的,从而使理论具有预测性。我们的结果可以测试感谢一个非常好的实验努力(当前和即将到来的,在B-和tau-charm-factories)和非常准确的专用蒙特卡罗生成器的组合。

英文摘要:

We study two and three meson decays of the tau lepton within the framework of the Resonance Chiral Theory, that is based on the following properties of QCD: its chiral symmetry in the massless case, its large-N_C limit, and the asymptotic behaviour it demands to the relevant form factors. Most of the couplings in the Lagrangian are determined this way rendering the theory predictive. Our outcomes can be tested thanks to the combination of a very good experimental effort (current and forthcoming, at B- and tau-charm-factories) and the very accurate devoted Monte Carlo generators.

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。

↑