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arXiv · 2301.04337

Sensitivity of $CP$ Violation of $\Lambda$ decay in $J/\psi \to \Lambda \bar{\Lambda}$ at STCF

Yue Xu·Xiaorong Zhou·Xiaodong Shi·Yongxin Guo·Kuiyong Liu·Li Gong·Xiaoshen Kang
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Abstract

The process of $J/\psi \to \Lambda \bar{\Lambda}$ is studied using $1.0\times10^{12}$ $J/\psi$ Monte Carlo (MC) events at $\sqrt{s}$=3.097 GeV with a fast simulation software at future Super Tau Charm Facility (STCF). The statistical sensitivity for $CP$ violation is determined to be the order of $\mathcal{O} (10^{-4})$ by measuring the asymmetric parameters of the $\Lambda$ decay. Furthermore, the decay of $J/\psi \to \Lambda \bar{\Lambda}$ also serves as a benchmark process to optimize the detector responses using the interface provided by the fast simulation software.

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Yue Xu, Xiaorong Zhou, Xiaodong Shi, Yongxin Guo, Kuiyong Liu, Li Gong, Xiaoshen Kang. 2023-01-11. Sensitivity of $CP$ Violation of $\Lambda$ decay in $J/\psi \to \Lambda \bar{\Lambda}$ at STCF. https://doi.org/10.1142/s021773232250208x

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