Coannihilation Scenarios and Particle Spectroscopy in SU(4)_c x SU(2)_L x SU(2)_R

Understand

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.