Distinctive Collider Signals for a Two Higgs Triplet Model

TL;DR

This paper proposes a two Higgs triplet model that predicts distinctive collider signals, including a unique decay mode, which can be observed at future high-energy colliders like the HL-LHC and FCC-hh.

Contribution

It introduces a novel two Higgs triplet framework with distinctive collider signatures, especially the decay of one doubly charged Higgs into another plus a Higgs boson.

Findings

Unique decay mode $H_1^{\

Final state signature can be observed at 14 TeV LHC and 100 TeV FCC-hh.

Model predicts specific mass splittings enabling distinctive collider signals.

Abstract

The extension of the Standard Model (SM) with two complex $SU(2)_{L}$ scalar triplets enables one to have the Type II seesaw mechanism operative consistently with texture-zero neutrino mass matrices. This framework predicts additional doubly charged, singly charged and neutral spinless states. We show that, for certain values of the model parameters, there is sufficient mass splitting between the two doubly charged states ( $H_1^{\pm\pm}, H_2^{\pm\pm}$) that allows the decay $H_1^{\pm\pm} \to H_2^{\pm\pm} h $, and thus leads to a unique signature of this scenario. We show that the final state $2(\ell^{\pm} \ell^{\pm}) + 4b + \mET~$ arising from this mode can be observed at the high energy, high luminosity (HE-HL) run of the 14 TeV Large Hadron Collider (LHC), and also at a 100 TeV Future Circular Collider (FCC-hh).