Ordinary muon capture studies for the matrix elements in $\beta \beta$ decay

D. Zinatulina, V. Brudanin, V. Egorov +4

Precise measurement of $\gamma$-rays following ordinary (non-radiative) capture of negative muons by natural Se, Kr, Cd and Sm, as well as isotopically enriched ${}^{48}$Ti, ${}^{76}$Se, $^…