Including non-holomorphic soft terms in the RGE running of GMSB with adjoint messengers enlarges the allowed parameter space, keeps the stau non-tachyonic at small hypercharge messenger coupling, and can reduce SUSY contributions to muon g-2 by up to about 50 x 10^-10.
Gauge Mediation Models with Adjoint Messengers
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abstract
We present a class of models in the framework of gauge mediation supersymmetry breaking where the messenger fields transform in the adjoint representation of the Standard Model gauge symmetry. To avoid unacceptably light right-handed sleptons in the spectrum we introduce a non-zero U(1)_B-L D-term. This leads to an additional contribution to the soft supersymmetry breaking mass terms which makes the right-handed slepton masses compatible with the current experimental bounds. We show that in this framework the observed 125 GeV Higgs boson mass can be accommodated with the sleptons accessible at the LHC, while the squarks and gluinos lie in the multi-TeV range. We also discuss the issue of the fine-tuning and show that the desired relic dark matter abundance can also be accommodated.
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Non-holomorphic Contributions in GMSB with Adjoint Messengers
Including non-holomorphic soft terms in the RGE running of GMSB with adjoint messengers enlarges the allowed parameter space, keeps the stau non-tachyonic at small hypercharge messenger coupling, and can reduce SUSY contributions to muon g-2 by up to about 50 x 10^-10.