Medusa, a multithread 4-body decay fitting and simulation software Alessandro Maria Ricci, Antonio Augusto Alves Junior, Davide Brundu, Andrea Contu, Francesca Dordei and Piera Muzzetto EPJ Web of Conf., 295 (2024) 06015 Published online: 06 May 2024 DOI: 10.1051/epjconf/202429506015