Top quark as a probe of heavy Majorana neutrino at the LHC and future collider

Abstract

Right-handed (RH) Majorana neutrinos play a crucial role in understanding the origin of neutrino mass, the nature of dark matter and the mechanism of matter-antimatter asymmetry. In this work, we investigate the observability of heavy Majorana neutrino through the top quark neutrinoless double beta decay process $t\to b{\ell }^{+}{\ell }^{+}jj$ at hadron colliders. By performing detector level simulation, we demonstrate that our method can give stronger limits on the light-heavy neutrino mixing parameters $|V_{eN,\mu N}|$ in the mass range of 15 GeV $<m_N<$ 80 GeV than other existing collider bounds.

arXiv comment6 pages, discussions added, version published in PRD (rapid communication)

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