Model independent bounds on heavy sterile neutrinos from the angular distribution of $\mathbf{B}\to {\mathbf{D}}^{\ast }\mathbf{\ell }\hat{\mathbf{I}}½$ decays

Florian U. Bernlochner, Marco Fedele, Tim Kretz +2

In this paper we study the bounds that can be inferred on New Physics couplings to heavy sterile neutrinos $N$ from the recent measurements performed by the Belle collaboration of…