Supersymmetry with a Sister Higgs
arXiv:1207.5522 · doi:10.1103/PhysRevD.91.055003
Abstract
Within the context of supersymmetric theories, explaining a 125 GeV Higgs motivates a consideration of a broader range of models. We consider a simple addition to the MSSM of a "Sister Higgs" (), a Higgs field that participates in electroweak symmetry breaking but does not give any direct masses to Standard Model matter fields. While a relatively minor addition, the phenomenological implications can be important. Such a field can be naturally charged under an additional symmetry group . If gauged, the Higgs mass is naturally much larger than in the MSSM through an NMSSM-type interaction, but with playing the role of . The addition of the sister Higgs allows new R-parity violating operators , which are less constrained than conventional leptonic R-parity violation. Considerations of unification motivates the presence of colored -charged fields. Production of these G-quarks can lead to new b-rich final states and modifications to decays of gluinos, as well as new opportunities for R-parity violation. Unlike a conventional fourth generation, G-quarks dominantly decay into a light jet and a scalar (potentially the Higgs), which then generally decays to b-jets. The presence of additional sister charges allows the possibilities that lightest sister-charged particle (LSiP) could be stable. We consider the possibility of an LSiP dark matter candidate and find it is generally very constrained.
36 pages
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