Superallowed decays within and beyond the standard model Adam Falkowski, Martín González-Alonso, Oscar Naviliat-Cuncic and Nathal Severijns Eur. Phys. J. A, 59 5 (2023) 113 Published online: 24 May 2023 DOI: 10.1140/epja/s10050-023-01030-7