Relation between the $0\nu \beta \beta$ and $2\nu \beta \beta$ nuclear matrix elements revisited

Fedor Šimkovic, Rastislav Hodák, Amand Faessler +1

We show that the dominant Gamow-Teller part, $M_{GT}^{0\nu }$, of the nuclear matrix element governing the neutrinoless $\beta \beta$ decay is related to the matrix element $M_{cl}^{2\nu }$ gover…