Spontaneous R-parity violating type III seesaw

TL;DR

This paper introduces a model combining spontaneous R-parity violation with Type III seesaw to explain neutrino masses, predict new heavy leptons, and propose distinctive collider signatures.

Contribution

It presents a novel model integrating R-parity violation and Type III seesaw, including new heavy leptons and unique decay modes.

Findings

Successfully explains neutrino oscillation data

Predicts additional heavy charged leptons and their mixing

Identifies distinctive collider signatures

Abstract

We present a model where neutrino masses are generated by a combination of spontaneous R-parity violation and Type III seesaw. In addition to the usual MSSM particle content, our model consists of one extra triplet matter chiral superfield containing heavy SU(2) triplet fermions and its superpartners. R-parity is broken spontaneously when the sneutrinos associated with the one heavy neutrino as well as the three light neutrinos get vacuum expectation values, giving rise to the mixed $8\times 8$ neutralino-neutrino mass matrix. We show that our model can comfortably explain all the existing neutrino oscillation data. Due to the presence of the triplet fermion, we have a pair of additional heavy charged leptons which mix with the standard model charged leptons and the charginos. This gives rise to a $6\times 6$ chargino-charged lepton mass matrix, with 6 massive eigenstates. Finally we discuss about the different R-parity violating possible decay modes and the distinctive collider signatures which our model offers.