CP violation studies at Super Tau-Charm Facility

TL;DR

This paper discusses the potential of a future Tau-Charm Facility to conduct sensitive tests of $C ext{P}$ violation and other fundamental symmetries in tau, charm, hyperon, and kaon systems, advancing beyond current capabilities.

Contribution

It presents the scientific opportunities and experimental prospects for studying $C ext{P}$ violation and symmetry tests at a proposed next-generation tau-charm collider.

Findings

Potential for high-precision $C ext{P}$ violation measurements in charm decays

Opportunities for $C ext{P}$ violation studies in tau and hyperon decays

Enhanced tests of $CPT$ invariance in $K^{0}-ar{K}^{0}$ mixing

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.