Crypton (particle)

In particle physics, the crypton is a hypothetical superheavy particle, thought to exist in a hidden sector of string theory. It has been proposed as a candidate particle to explain the dark matter content of the universe. Cryptons arising in the hidden sector of a superstring-derived flipped SU(5) GUT model have been shown to be metastable with a lifetime exceeding the age of the universe. Their slow decays may provide a source for the ultra-high-energy cosmic rays (UHECR).

References

• John Ellis; Jorge L. Lopez; D.V. Nanopoulos (1990). "Confinement of fractional charges yields integer-charged relics in string models". Physics Letters B. 247 (2–3): 257–264. Bibcode:1990PhLB..247..257E. doi:10.1016/0370-2693(90)90893-B. 
• Karim Benakli; John Ellis; D.V. Nanopoulos (1999). "Natural Candidates for Superheavy Dark Matter in String and M Theory". Physical Review D. 59 (4): 047301. Bibcode:1999PhRvD..59d7301B. arXiv:hep-ph/9803333 . doi:10.1103/PhysRevD.59.047301. 
• John Ellis; V.E. Mayes; D.V. Nanopoulos (2004). "Flipped Cryptons and the Ultra-high Energy Cosmic Rays". Physical Review D. 70 (7): 075015. Bibcode:2004PhRvD..70g5015E. arXiv:hep-ph/0403144 . doi:10.1103/PhysRevD.70.075015. 
• John Ellis; V.E. Mayes; D.V. Nanopoulos (2006). "Ultrahigh Energy Cosmic Ray Particle Spectra from Crypton Decays". Physical Review D. 74 (11): 115003. Bibcode:2006PhRvD..74k5003E. arXiv:astro-ph/0512303 . doi:10.1103/PhysRevD.74.115003.