Scalar neutrino dark matter in the BLMSSM *

Abstract

Abstract The BLMSSM is an extension of the minimal supersymmetric standard model (MSSM). Its local gauge group is . Supposing the lightest scalar neutrino is a dark matter candidate, we study the relic density and the spin independent cross section of sneutrino scattering off a nucleon. We calculate the numerical results in detail and find a suitable parameter space. The numerical discussion can confine the parameter space and provide a reference for dark matter research.