Flipped dark matter

Details Flipped dark matter Flipped dark matter

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phlb..209..283e&link_type=abstract

Physics Letters B, Volume 209, Issue 2-3, p. 283-288.

Physics

14

Scientific paper

We study candidates for dark matter in a minimal flipped SU(5)×U(1) supersymmetric GUT. Since the model has no R-parity, spin-1/2 supersymmetric partners of conventional particles mix with other neutral fermions including neutrinos, and can decay into them. The lightest particle which is predominantly a gaugino/higgsino mixture decays with a lifetime τχ~1-109 s. The model contains a scalar ``flaton'' field whose coherent oscillations decay before cosmological nucleosynthesis, and whose pseudoscalar partner contributes negligibly to Ω if it is light enough to survive to the present epoch. The fermionic ``flatino'' partner of the flaton has a lifetime τΦ~1028-1034 yr and is a viable candidate for metastable dark matter with Ω<~1.

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