Merge branch 'emrodrig/Multimuons' into 'master'
Adding new lifetimes for multimuon final states
See merge request !1744 (merged)
(cherry picked from commit da6d207a)
603b6acc Adding new lifetimes for multimuon final states b9fb0d88 Fixing date issue with Multimuon BNmu decfiles f3eb2318 Fixing date from 2023 to 2024