New dark matter candidate in the BLB-L symmetric SSM

Nov 24, 2023
8 pages
Published in:
  • Eur.Phys.J.C 83 (2023) 11, 1073
  • Published: Nov 24, 2023

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Abstract: (Springer)
The B-L symmetric SUSY model (B-LSSM) introduces a new ZZ' gauge boson and two singlet scalars, which indicates there are more neutralinos in the B-LSSM comparing with the minimal SUSY extension of standard model (MSSM). These new neutralinos provide more dark matter (DM) candidates in the B-LSSM, we find that the super partner of the new scalar singlet can serve as the lightest supersymmetric particle (LSP) and be considered as a DM candidate. The properties of this new DM candidate are analyzed in this work. Taking into account the experimental constraints on Higgs boson mass, B meson rare decays and muon anomalous magnetic dipole moment, the numerical results are obtained and presented. The properties of new DM candidate in the B-LSSM satisfy the observed relic density Ωh2\Omega h^2 and comply with the latest upper bounds on σSIχ10n\sigma _\textrm{SI}^{\chi _1^0-n}, and its mass is expected to greater than 80  GeV80\;\textrm{GeV} approximately.
  • new physics
  • supersymmetry
  • B-L number: invariance
  • minimal supersymmetric standard model
  • scalar particle: singlet
  • singlet: 2
  • singlet: scalar
  • neutralino: LSP
  • neutralino: dark matter
  • neutralino: relic density