论文部分内容阅读
我们最近提出了一个新颖代数方法来研究轻子衰变过程.这种方法是利用基本弱相互作用和角动量代数ττ得到衰变振幅的解析式,从而可以关联不同的轻子衰变过程.我们的研究还发现宇称守恒在轻子衰变及末态Gτ相互作用过程所起的重要作用.应用得到的解析公式讨论了一些有意义和有趣的应用,包括极化振幅和检验标量共振和轴矢量共振的性质.研究还发现有一个物理量对参数很敏感,因而有助于检验超越标准模型的不同模型.τα更重要的是,我们在轻子衰变中开辟了一个新方向检验标量共振态和轴矢量共振态的性质,这些共振态被认为是赝标-赝标或矢量-赝标场相互作用动力学产生的.在轻子衰变中预言了不同反应道的不变质量分布和最后衰变分τ支比,结果表明它们均在未来大科学装置——中国超级陶粲装置开展相关实验的可以探测的范围内.“,”A novel algebraic approach recently proposed is presented in this paper for investigating theτlepton decay process. In this approach,we use the basic weak interaction and angular momentum algebra and finally obtain analytical decay amplitudes,finding that this formalism can relate the different decay processes and also lead to a different interpretation of the important role played by -parity in these de-G cays. Then we apply this formalism to explore some meaningful and interesting applications on leptonτdecays,including the polarization amplitudes and tests on the nature of scalar resonances or axial-vector resonances. The results show that one magnitude is very sensitive to the parameter and useful to testαdifferent models Beyond the Standard Model. And very importantly,we firstly open up a new direction in the decays to test the nature of resonances which were obtained as dynamically generated from theτpseudoscalar-pseudoscalar or vector-pseudoscalar interactions. In these decays we make predictions forτinvariant mass distribution and the final branching ratios,the results show that these ratios are within measurable ranges on related experiments in the possible future large research facility of the Super Tau-Charm Facility of China.