标题： 利用包含矢量介子的手征拉格朗日量研究异常tau轻子衰变 显示英文标题

标题： Study of anomalous tau lepton decay using chiral Lagrangian with vector mesons

摘要： 一种内在宇称破坏的强子tau轻子衰变被研究。 $\tau \to \pi \pi \eta \nu$是其中主要贡献来自内在宇称破坏的过程。 为了预测强子不变质量谱并将其与实验数据进行比较，我们扩展了包含矢量介子的手征拉格朗日量，使其包含内在宇称破坏项以及$\phi$和$\eta^\prime$介子。 内在宇称破坏项的系数将通过拟合$V^I \rightarrow P \gamma$、$V^I \rightarrow 3 P$和$P \to V^I \gamma $的分支比来确定，其中$V^I$表示矢量介子，$1^-$和$P$表示伪标量介子，$0^-$。 显示英文摘要

摘要： An intrinsic parity violating hadronic tau lepton decay is investigated. $\tau \to \pi \pi \eta \nu$ is the process in which the dominant contribution to the amplitude is due to the intrinsic parity violation. To predict the hadronic invariant mass spectra and to compare them with experimental data, we extend the chiral Lagrangian with vector mesons so that it incorporates the intrinsic parity violating terms and $\phi$ and $\eta^\prime$ mesons. The coefficients of the intrinsic parity violating terms will be determined by fitting the branching fractions for $V^I \rightarrow P \gamma$, $V^I \rightarrow 3 P$ and $P \to V^I \gamma $ where $V^I$ denotes vector mesons $1^-$ and $P$ denotes pseudo-scalar mesons $0^-$.