Zhaofeng Kang, Yandong Liu, Guo-Zhu Ning
The discovery of a 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 SSMs extended with hypercharge \pm1 triplets, and investigate two scenarios: (A) Triplets couple to the Higgs doublets with significant strength, which can significantly enhance m_h and simultaneously raise the Higgs decay to di-photon rate via the light chargino loops; (B) Oppositely, those couplings are quite weak, but the doubly-charged Higgs bosons, owing to the gauge group structure, offer a natural interpretation to an excess rather than the deficient. Additionally, the pseudo Dirac triplet fermion in this scenario is a natural inelastic non-thermal dark matter candidate. Light doubly-charged particles, especially a robust doubly-charged Higgs boson below about 100 GeV in scenario B, are predicted. We give a preliminary discussion on their search at the LHC.
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http://arxiv.org/abs/1301.2204
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