Inverse Neutrino-less Double Beta Decay Revisited: Neutrinos, Higgs Triplets and a Muon Collider

Understand

We revisit the process of inverse neutrino-less double beta decay (e e -> W W) at future linear colliders.

• The cases of Majorana neutrino and Higgs triplet exchange are considered.
• We also discuss the processes e mu -> W W and mu mu -> W W, which are motivated by the possibility of muon colliders.
• For heavy neutrino exchange and center-of-mass energies larger than 1 TeV, we show that masses up to 10^6 (10^5) GeV could be probed for e-e and e-mu machines, respectively.