UHECR Particle Spectra from Crypton Decays

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dc.creatorEllis, John
dc.creatorMayes, V. E.
dc.creatorNanopoulos, D. V.
dc.date2005-12-12
dc.date2006-12-09
dc.date.accessioned2026-07-07T10:27:45Z
dc.date.available2026-07-07T10:27:45Z
dc.descriptionWe calculate the spectra of ultra-high-energy cosmic rays (UHECRs) in an explicit top-down model based on the decays of metastable neutral `crypton' states in a flipped SU(5) string model. For each of the eight specific 10th-order superpotential operators that might dominate crypton decays, we calculate the spectra of both protons and photons, using a code incorporating supersymmetric evolution of the injected spectra. For all the decay operators, the total UHECR spectra are compatible with the available data. Also, the fractions of photons are compatible with all the published upper limits, but may be detectable in future experiments.
dc.description9 pages latex, 10 eps figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0512303
dc.identifierhttp://arxiv.org/abs/astro-ph/0512303
dc.identifierPhys.Rev.D74:115003,2006
dc.identifierdoi:10.1103/PhysRevD.74.115003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177243
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleUHECR Particle Spectra from Crypton Decays
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