New theory paper on CP violation

“[New-physics signatures via CP violation in η (0) → π 0 µ + µ − and η 0 → ηµ + µ − decays](https://link.springer.com/article/10.1007/JHEP05(2022)147)” by R. Escribano, E. Royo and P. Sánchez-Puertas has been published in JHEP.