Reconciling the muon g − 2 and dark matter relic density with the LHC results in nonuniversal gaugino mass models

Abstract

Relatively light electroweak superparticle masses are required to satisfy the bulk annihilation region of dark matter relic density and account for the observed excess of muon g − 2, while TeV scale squark and gluino masses are required to account for the 125 GeV Higgs boson mass and the negative SUSY search results from 7 TeV LHC in most SUSY models. These two sets of requirements can be reconciled in a simple nonuniversal gaugino mass model, which assumes SUSY breaking via a combination of two superfields belonging to the singlet and the 200-plet representations of the GUT group SU(5). The model can be probed via squark/gluon search with the present and future LHC data. In a more general nonuniversal gaugino mass model the squark and gluino masses can be raised to the edge of the discovery limit of 14 TeV LHC or beyond. This model can be probed, however, through the search for electroweak pair production of the relatively light sleptons and winos with the 14 TeV LHC data in future.