Exploring CP-violation, via heavy neutrino oscillations, in rare B meson decays at Belle II

Abstract

In this article we study the rare B-meson decay via two on-shell almost-degenerate Majorana Heavy Neutrinos, into two charged leptons and two pseudoscalar mesons ($B^{\pm }\to D^0{\ell }_1^{\pm }{\ell }_2^{\pm }{\pi }^{\mp }$). We consider the scenario where the heavy neutrino masses are $\sim 2$ GeV and the heavy-light mixing coefficients are $|B_{\ell N}{|}^2\sim 10^{-5}$, and evaluate the possibility to measure the CP-asymmetry at Belle II. We present some realistic conditions under which the asymmetry could be detected.