Asymmetric sneutrino dark matter and the Ωb/ΩDM puzzle

By D. Hooper, J. March-Russell, S. West. 2004

191 citations recorded by the source corpus.

Abstract The inferred values of the cosmological baryon and dark matter densities are strikingly similar, but in most theories of the early universe there is no true explanation of this fact; in particular, the baryon asymmetry and thus density depends upon unknown, and a priori unknown and possibly small, CP-violating phases which are independent of all parameters determining the dark matter density. We consider models of dark matter possessing a particle–antiparticle asymmetry where this asymmetry determines both the baryon asymmetry and strongly effects the dark matter density, thus naturally linking Ω b and Ω dm . We show that sneutrinos can play the role of such dark matter in a previously studied variant of the MSSM in which the light neutrino masses result from higher-dimensional supersymmetry-breaking terms.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/23b84cd2994019c26debb694435cd9810386388a

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In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

Sneutrino cold dark matter, a new analysis: Relic abundance and detection rates (2007, background): “Sneutrinos in connection with the dark matter problem have also been discussed in different frameworks some of which may be found in Refs. [16, 17, 18 , 19, 20, 21, 22].”