论文标题
$τ^ - \toπ^-π^+π^ - ν_τ$的部分波分析在belle
Partial wave analysis of $τ^-\toπ^-π^+π^-ν_τ$ at Belle
论文作者
论文摘要
我们介绍了用于准备分析$τ^ - \toπ^-π^+π^ - ν_τ$的仿真研究，来自Belle实验的数据中的Kek $ \ Mathrm {E}^+\ Mathrm {e}^ - $ collider。分析这种衰变可以阐明$ \ mathrm {a} _1（1260）$和$ \ mathrm {a} _1（1420）$共振和产量结果，从而改善了$τ$电气和磁性偶极矩的测量结果。我们表明，您可以实现比以前对同一衰减的分析更高的信号效率。我们还证明，神经网络可以对我们复杂的六维背景分布进行建模，而准模型独立的部分波分析可以提取谐振质量，宽度，生产幅度和相位。
We present simulation studies in preparation for analyzing $τ^-\toπ^-π^+π^-ν_τ$ in data from the Belle experiment at the KEK $\mathrm{e}^+\mathrm{e}^-$ collider. Analyzing this decay can shed light on the $\mathrm{a}_1(1260)$ and $\mathrm{a}_1(1420)$ resonances and yield results that improve measurement of the $τ$ electric and magnetic dipole moments. We show that we can achieve a higher signal efficiency than previous analyses of the same decay. We also demonstrate that neural networks can model our complicated six-dimensional background distributions and that quasi-model-independent partial-wave analysis can extract resonance masses, widths, and production amplitudes and phases.
