Unified TeV Scale Picture of Baryogenesis and Dark Matter

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dc.creatorBabu, K. S.
dc.creatorMohapatra, R. N.
dc.creatorNasri, S.
dc.date2006-12-28
dc.date2007-03-25
dc.date.accessioned2026-07-07T11:22:25Z
dc.date.available2026-07-07T11:22:25Z
dc.descriptionWe present a simple extension of MSSM 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 $M_N \sim 100$ GeV and $M_X \sim$ TeV. The scalar partner of $N$ (denoted $\tilde{N}_1$) is naturally the lightest SUSY particle as it has no gauge interactions and plays the role of dark matter. $\tilde{N}_1$ annihilates into quarks efficiently in the early universe via the exchange of the fermionic $\tilde{X}$ field. The model is experimentally testable in (i) neutron--antineutron oscillations with a transition time estimated to be around $10^{10}$ sec, (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.
dc.description10 pages, one reference updated. Version to appear in Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/hep-ph/0612357
dc.identifierhttp://arxiv.org/abs/hep-ph/0612357
dc.identifierPhys.Rev.Lett.98:161301,2007
dc.identifierdoi:10.1103/PhysRevLett.98.161301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/194561
dc.subjectHigh Energy Physics - Phenomenology
dc.titleUnified TeV Scale Picture of Baryogenesis and Dark Matter
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