Decay of $B^{\pm }\to {\tau }^{\pm }+$ "missing momentum" and direct measurement of the mixing parameter $U_{\tau N}$

Gorazd Cvetič, C. S. Kim, Y. -J. Kwon +1

We derive the decay widths for the leptonic decays of heavy charged pseudoscalars to massive sterile neutrinos, $M^{\pm }\to {\ell }^{\pm }+N$, within the frameworks involving the St…