Ultra-high energy cosmic rays from super-heavy X particle decay

2002/10/21 by Barbot Cyrille, Cyrille, Barbot
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #astro-ph #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0210280

7 pages, 3 figures, proceeding for a talk given at Susy 2002, DESY, Hamburg

arxiv created 2002/10/21 · arxiv updated 2009/11/30

Abstract

In this talk, I present the last and more precise results obtained in the computation of the final spectra of stable particles issued from the decay of super-heavy X particles (M_X ~ 10²1 to 10²5 eV). Such very energetic decay products, carrying a fraction of the mass of the X particle, are believed to be a plausible explanation for the observed ultra-high energy cosmic rays (UHECR). Combining these results with X-particle models and with a code describing the propagation effects for UHECRs through the interstellar medium, it becomes possible to make some predictions on the fluxes expected on Earth, hopefully detectable in the next generation of experiments.

Related

• Super-heavy X particle decay and Ultra-High Energy Cosmic Rays
• Ultra - High Energy Cosmic Rays from decay of the Super Heavy Dark Matter Relics
• Opening the ultra high energy cosmic ray window from the top
• Ultrahigh energy cosmic rays as a Grand Unification signal
• On Spectrum of Extremely High Energy Cosmic Rays through Decay of Superheavy Particles