Unified TeV scale picture of baryogenesis and dark matter

K. S. Babu, R. N. Mohapatra, Salah Nasri

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)


We present a simple extension of the minimal supersymmetric standard model which provides a unified picture of cosmological baryon asymmetry and dark matter. Our model introduces a gauge singlet field N and a color triplet field X which couple to the right-handed quark fields. The out-of-equilibrium decay of the Majorana fermion N mediated by the exchange of the scalar field X generates adequate baryon asymmetry for MN∼100GeV and MX∼TeV. The scalar partner of N (denoted N≈1) is naturally the lightest SUSY particle as it has no gauge interactions and plays the role of dark matter. The model is experimentally testable in (i) neutron-antineutron oscillations with a transition time estimated to be around 1010sec, (ii) discovery of colored particles X at LHC with mass of order TeV, and (iii) direct dark matter detection with a predicted cross section in the observable range.

Original languageEnglish
Article number161301
JournalPhysical Review Letters
Issue number16
Publication statusPublished - Apr 16 2007
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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