Probing heavy triplet leptons in Type III seesaw at future muon colliders

Abstract

We study the search potential of heavy triplet leptons in Type III Seesaw mechanism at future highenergy and high-luminosity muon colliders. The impact of up-to-date neutrino oscillation results is taken into account on neutrino parameters and the consequent decay patterns of heavy leptons in Type III Seesaw.The three heavy leptons in the Casas-Ibarra parametrization with diagonal unity matrix are distinguishable in their decay modes. We consider the pair production of charged triplet leptons E + E − through both µ + µ − annihilation and vector boson fusion (VBF) processes. The leading-order framework of electroweak *