
Strong and weak CP tests in sequential decays of polarized Σ^0 hyperons
The BESIII collaboration reported the first pioneering strong-CP test in hyperon decays based on 10 billion J/ψ and 2.7 billion ψ(3686) data. The results have been recently published in Physical Review Letters on September 4, 2024 (Phys. Rev. Lett. 133 (2024), 101902).