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arXiv · 2502.08907

CP violation studies at Super Tau-Charm Facility

Hai-Yang Cheng·Zhi-Hui Guo·Xiao-Gang He·Yingrui Hou·Xian-Wei Kang·Andrzej Kupsc·Ying-Ying Li·Liang Liu·Xiao-Rui Lyu·Jian-Ping Ma·Stephen Lars Olsen·Haiping Peng·Qin Qin·Pablo Roig·Zhi-Zhong Xing·Fu-Sheng Yu·Yu Zhang·Jianyu Zhang·Xiaorong Zhou
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Abstract

Charge-parity ($C\!P$) violation in the tau-charm energy region is a promising area for sensitive tests of Standard Model (SM) predictions and searches for new, beyond the SM physics. A future Tau-Charm Facility that operates at center-of-mass energies between 2.0 and 7.0 GeV, with a peak luminosity of $0.5\times10^{35}$~cm$^{-2}$s$^{-1}$, would provide huge numbers of hadrons and tau ($\tau$) leptons that are produced in low-background environments and with well understood kinematic properties. In this report, prospects for unique studies of $C\!P$ violation in the decay of charmed hadrons, and in the production and decay of hyperons and $\tau$ leptons at a next-generation tau-charm facility are discussed. In addition, opportunities for improved tests of $CPT$ invariance test in $K^{0}-\bar{K}^{0}$ mixing are presented.

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Hai-Yang Cheng, Zhi-Hui Guo, Xiao-Gang He, Yingrui Hou, Xian-Wei Kang, Andrzej Kupsc, Ying-Ying Li, Liang Liu, Xiao-Rui Lyu, Jian-Ping Ma, Stephen Lars Olsen, Haiping Peng, Qin Qin, Pablo Roig, Zhi-Zhong Xing, Fu-Sheng Yu, Yu Zhang, Jianyu Zhang, Xiaorong Zhou. 2025-02-13. CP violation studies at Super Tau-Charm Facility. https://arxiv.org/abs/2502.08907

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