Enhancing $h\to \gamma \gamma$ with staus in SUSY models with extended gauge sector

Abstract

We discuss the impact on the stau masses of the additional D-terms in U(1)-extended MSSM models. We show, explicitly for the B-L-SSM, that these contributions can play a crucial role in the explanation of the enhanced diphoton decay rate of a SM-like Higgs particle around 125 GeV. Even in the most constrained scenario with universal scalar and gaugino masses, it is possible to obtain a sizable enhancement and, in addition, the correct relic density for the LSP. Furthermore, a lighter CP-even scalar that could fit the LEP excess at 98 GeV is viable.

5 pages, 3 figures, 2 tables

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Cited by in corpus (7)

• Lepton-flavor violation and two loop electroweak corrections to $(g-2{)}_{\mu }$ in the B-L symmetry SSM
• Electron and muon $(g-2)$ in the B-LSSM
• Search for Mono-Higgs Signals at the LHC in the B-L Supersymmetric Standard Model
• Left-right supersymmetry after the Higgs boson discovery
• Naturalness and a light $Z^{\prime }$
• Pair production of neutral Higgs particles in the B-LSSM
• Genuine NMSSM deviations in the 125 GeV Higgs boson decays