Limiting SUSY-QCD spectrum and its application for decays of superheavy particles

Abstract

The supersymmetric generalization of the limiting and Gaussian QCD spectra is obtained. These spectra are valid for $x\ll 1$, when the main contribution to the parton cascade is given by gluons and gluinos. The derived spectra are applied to decaying superheavy particles with masses up to the GUT scale. These particles can be relics from the Big Bang or produced by topological defects and could give rise to the observed ultrahigh energy cosmic rays. General formulae for the fluxes of protons, photons and neutrinos due to decays of superheavy particles are obtained.

8 pages, revtex, 3 ps figures. v2 minor changes, v3 typo in eq.(15) corrected; version to appear in Phys. Lett. B

References in corpus (3)

• Cosmic Necklaces and Ultrahigh Energy Cosmic Rays
• High Energy Particles from Monopoles Connected by Strings
• Ultra-high energy LSP

Cited by in corpus (32)

• Origin and Propagation of Extremely High Energy Cosmic Rays
• Ultra-High-Energy Cosmic Rays
• The Cosmic Microwave Background and Particle Physics
• The high energy cosmic ray spectrum from relic particle decay
• Ultrahigh Energy Cosmic Rays: The state of the art before the Auger Observatory
• Constraining Very Heavy Dark Matter Using Diffuse Backgrounds of Neutrinos and Cascaded Gamma Rays
• Fragmentation functions in SUSY QCD and UHECR spectra produced in top-down models
• Probing Grand Unified Theories with Cosmic Ray, Gamma-Ray and Neutrino Astrophysics
• Heavy decaying dark matter and IceCube high energy neutrinos
• Monte Carlo simulation for jet fragmentation in SUSY-QCD
• Ultra High Energy Cosmic Rays from Compact Sources
• Super Heavy Dark Matter in light of BICEP2, Planck and Ultra High Energy Cosmic Rays Observations
• Detailed analysis of the decay spectrum of a super-heavy X particle
• Ultra High Energy Cosmic Rays
• UHECR propagation in the Galaxy: clustering versus isotropy
• Relic neutrino masses and the highest energy cosmic rays
• Grand Unification Signal from Ultra High Energy Cosmic Rays?
• Hunting for super-heavy dark matter with the highest-energy cosmic rays
• On the status of superheavy dark matter
• Anisotropy of Ultra High Energy Cosmic Rays in the Dark Matter Halo Model
• Ultra High Energy Cosmic Rays from Cosmological Relics
• White paper on EUSO-SPB2
• Gamma Rays from Superheavy Relic Particles in the Halo
• Neutralino spectrum in top-down models of UHECR
• Decay of Super-Heavy particles: User guide of the SHdecay program
• SUSY Resonances from UHE neutralinos in Neutrino Telescopes and in the Sky
• The Passage of Ultrarelativistic Neutralinos through Matter
• A Discussion on Supersymmetric Cosmic Strings with Gauge-Field Mixing
• Super-heavy X particle decay and Ultra-High Energy Cosmic Rays
• Ultra high energy cosmic rays from cosmological relics
• Signals of Very High Energy Neutralinos in Future Cosmic Ray Detectors
• Estimation of Baryon Asymmetry from Dark Matter Decaying into IceCube Neutrinos