Flipped dark matter

John Ellis, John S. Hagelin, Stephen Kelley, D. V. Nanopoulos, Keith A. Olive

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)283-288
Number of pages6
JournalPhysics Letters B
Issue number2-3
StatePublished - Aug 4 1988

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