Highlights of Supersymmetric Hypercharge $\pm1$ Triplets

TL;DR

This paper explores supersymmetric models extended with hypercharge ±1 triplets, analyzing their impact on Higgs mass, di-photon excess, and dark matter, predicting light doubly-charged particles and potential LHC signatures.

Contribution

It introduces and studies hypercharge ±1 triplet extensions of the supersymmetric standard model, highlighting their effects on Higgs properties and dark matter candidates.

Findings

Triplet couplings can raise Higgs mass and enhance di-photon rate.

Doubly-charged Higgs bosons around 100 GeV are predicted.

Light doubly-charged particles could be detected at the LHC.

Abstract

The discovery of a standard model (SM)-like Higgs boson with a relatively heavy mass $m_h$ and hints of di-photon excess has deep implication to supersymmetric standard models (SSMs). We consider the SSM extended with hypercharge $\pm1$ triplets, and investigate two scenarios of it: (A) Triplets significantly couple to the Higgs doublets, which can substantially raise $m_h$ and simultaneously enhance the Higgs to di-photon rate via light chargino loops; (B) Oppositely, these couplings are quite weak and thus $m_h$ can not be raised. But the doubly-charged Higgs bosons, owing to the gauge group structure, naturally interprets why there is an excess rather than a deficient of Higgs to di-photon rate. Additionally, the pseudo Dirac triplet fermion is an inelastic non-thermal dark matter candidate. Light doubly-charged particles, especially the doubly-charged Higgs boson around 100 GeV in scenario B, are predicted. We give a preliminary discussion on their search at the LHC.