CP violation in non-leptonic decays to excited final states Tian Zhou, Tianhong Wang, Hui-Feng Fu, Zhi-Hui Wang, Lei Huo and Guo-Li Wang Eur. Phys. J. C, 81 4 (2021) 339 Published online: 20 April 2021 DOI: 10.1140/epjc/s10052-021-09128-2