Ultrahigh-energy cosmic rays particle spectra from crypton decays | Zendy

John Ellis | Zendy; Van E. Mayes | Zendy; D.V. Nanopoulos | Zendy

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Ultrahigh-energy cosmic rays particle spectra from crypton decays

Author(s) -

John Ellis,

Van E. Mayes,

D.V. Nanopoulos

Publication year - 2006

Publication title -

physical review. d. particles, fields, gravitation, and cosmology/physical review. d, particles, fields, gravitation, and cosmology

Language(s) - English

Resource type - Journals

eISSN - 1550-7998

pISSN - 1550-2368

DOI - 10.1103/physrevd.74.115003

Subject(s) - physics , spectral line , photon , cosmic ray , cosmic string , metastability , string (physics) , massless particle , ultra high energy cosmic ray , nuclear physics , astrophysics , particle physics , theoretical physics , quantum mechanics

We calculate the spectra of ultra-high-energy cosmic rays (UHECRs) in anexplicit top-down model based on the decays of metastable neutral `crypton'states in a flipped SU(5) string model. For each of the eight specific10th-order superpotential operators that might dominate crypton decays, wecalculate the spectra of both protons and photons, using a code incorporatingsupersymmetric evolution of the injected spectra. For all the decay operators,the total UHECR spectra are compatible with the available data. Also, thefractions of photons are compatible with all the published upper limits, butmay be detectable in future experiments.Comment: 9 pages latex, 10 eps figure

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