Particle Spectroscopy of Supersymmetric SU(5) in Light of 125 GeV Higgs and Muon g − 2 Data

The discovery of the Higgs boson at the Large Hadron Collider (LHC) has a great impact on the minimal supersymmetric extension of the Standard Model (MSSM). In the context of the constrained MSSM (CMSSM) and its extension with non-universal masses for the MSSM Higgs doublets (NUHM2), sparticles with masses> 1 TeV are necessary to reproduce the observed Higgs boson mass of 125-126 GeV. On the other hand, there appears to be a significant amount of discrepancy between the measured muon g − 2 and the Standard Model prediction. A successful explanation of this dis-crepancy in the MSSM requires new contributions involving relatively light sparticles with masses < 1 TeV. In this paper, we attempt to accommodate the two conflicting requirements in an SU(5) inspired extension of the CMSSM. We assign non-universal but flavor blind soft supersymmetry breaking masses to the scalar components in 5̄ and 10 matter supermultiplets. The two MSSM Higgs doublets in the 5, 5 ̄ representa-tions of SU(5) are also assigned unequal soft mass2 at MGUT. We identify parameter regions which can simultaneously accommodate the observed Higgs boson mass and the muon g − 2 data, and which are compatible with other phenomenological con-straints such as neutralino dark matter relic abundance and rare B-meson decays. Some regions of the allowed parameter space will be explored at the upgraded LHC and by dark matter direct detection experiments