Same-sign tetra-leptons in type II seesaw at the LHC

TL;DR

This paper investigates the potential for observing same-sign tetra-lepton signals at the LHC within the type II seesaw model, focusing on the production of doubly charged Higgs bosons and their decay signatures.

Contribution

It introduces a novel SS4L signature arising from doubly charged Higgs pair production and analyzes its production cross section across different model parameters.

Findings

SS4L signal can be produced via pair production of doubly charged Higgs bosons.

The production cross section depends on mass splitting and triplet VEV.

Potential for detection at the LHC under certain parameter conditions.

Abstract

In type II seesaw model of neutrino mass generation, we study a remarkable signal of same-sign tetra-lepton (SS4L) signal at the Large hadron collider. When doubly charged Higgs is lightest, the heavier singly charged or neutral Higgs boson produces a doubly charged Higgs boson through its fast gauge decay. This leads to a novel signature of same-sign tetra-leptons resulting from a pair production of same-sign doubly charged Higgs bosons. We study production cross section for the SS4L signal in parameter space of the mass splitting among triplet components and the triplet vacuum expectation value at the LHC.