Coannihilation scenarios and particle spectroscopy in $SU(4{)}_{c}\ifmmode\times\else\texttimes\fi{}SU(2{)}_{L}\ifmmode\times\else\texttimes\fi{}SU(2{)}_{R}$

Coannihilation scenarios and particle spectroscopy in $S U (4)_{c} \times S U (2)_{L} \times S U (2)_{R}$

Ilia Gogoladze, Rizwan Khalid, and Qaisar Shafi

Phys. Rev. D 80, 095016 – Published 13 November 2009

Abstract

We identify a variety of coannihilation scenarios in a supersymmetric $S U (4)_{c} \times S U (2)_{L} \times S U (2)_{R}$ model with discrete left-right symmetry. Nonuniversal 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.