In the supersymmetric Pati-Salam framework, light bino-like neutralino dark matter below 110 GeV survives all constraints in bulk and Z-funnel regions for negative mu, with a right-handed stau next-to-lightest particle below 120 GeV.
Coannihilation Scenarios and Particle Spectroscopy in SU(4)_c x SU(2)_L x SU(2)_R
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abstract
We identify a variety of coannihilation scenarios in a supersymmetric SU(4)_c x SU(2)_L x SU(2)_R model with discrete left-right symmetry. Non-universal gaugino masses, compatible with the gauge symmetry, play an essential role in realizing gluino and bino-wino coannihilation regions that are consistent with the WMAP dark matter constraints. We also explore regions of the parameter space in which the little hierarchy problem is partially resolved. We present several phenomenologically interesting benchmark points and the associated sparticle and Higgs mass spectra.
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Light Neutralino Dark Matter in a Supersymmetric Pati-Salam Framework
In the supersymmetric Pati-Salam framework, light bino-like neutralino dark matter below 110 GeV survives all constraints in bulk and Z-funnel regions for negative mu, with a right-handed stau next-to-lightest particle below 120 GeV.