Soft probes of SU(5) unification

Abstract

We explore the sparticle and Higgs spectroscopy of an SU(5) inspired extension of the constrained minimal supersymmetric standard model. The universal soft parameter ${m}_{0}$ is replaced by ${m}_{\overline{5}}$ and ${m}_{10}$, where ${m}_{\overline{5}}$ and ${m}_{10}$ denote universal soft scalar masses associated with fields in the five- and ten-dimensional representations of SU(5). The special case ${m}_{\overline{5}}\ensuremath{\ll}{m}_{10}$ yields a rather characteristic sparticle spectroscopy, which can be tested at the LHC. We highlight a few benchmark points in which the lightest neutralino saturates the WMAP bound on cold dark matter abundance.