The scalar neutrinos as the lightest supersymmetric particles and cosmology

Details The scalar neutrinos as the lightest supersymmetric particles and cosmology The scalar neutrinos as the lightest supersymmetric particles and cosmology

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phlb..137..160i&link_type=abstract

Physics Letters B, Volume 137, Issue 3-4, p. 160-164.

Physics

88

Scientific paper

We argue that the τ-scalar neutrino may be the lightest R-odd particle in locally supersymmetric models. We look for cosmological constraints on the mass of a stable τ-sneutrino and find that there is no constraint at all as long as there is a Majorana component for the zino mass M >~ 3.5 GeV. For smaller values of M one has mτ < mντ <~ 3.5 GeV. Thus cosmological constraints for stable τ-sneutrinos are much milder than those for stable photinos or Higgsinos.

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