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Title: Unstable Superheavy Relic Particles as a Source of Neutrinos Responsible for Ultrahigh-Energy Cosmic Rays

Abstract

Decays of superheavy relic particles may produce extremely energetic neutrinos. Their annihilations on the relic neutrinos can be the origin of the cosmic rays with energies beyond the Greisen-Zatsepin-Kuzmin cutoff. The redshift acts as a cosmological filter selecting the sources at some particular value z{sub e}{+-}{delta}z , for which the present neutrino energy is close to the Z pole of the annihilation cross section. We predict no directional correlation of the ultrahigh-energy cosmic rays with the galactic halo. At the same time, there can be some directional correlations in the data, reflecting the distribution of matter at redshift z=z{sub e}{+-}{delta}z . Both of these features are manifest in the existing data. Our scenario is consistent with the neutrino mass reported by super-Kamiokande and requires no lepton asymmetry or clustering of the background neutrinos. (c) 2000 The American Physical Society.

Authors:
 [1];  [1]
  1. Department of Physics and Astronomy, UCLA, Los Angeles, California 90095-1547 (United States)
Publication Date:
OSTI Identifier:
20215538
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 84; Journal Issue: 7; Other Information: PBD: 14 Feb 2000; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COSMIC NEUTRINOS; COSMIC RAY SOURCES; PARTICLE DECAY; RED SHIFT; NONLUMINOUS MATTER; THEORETICAL DATA

Citation Formats

Gelmini, Graciela, Kusenko, Alexander, and RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973. Unstable Superheavy Relic Particles as a Source of Neutrinos Responsible for Ultrahigh-Energy Cosmic Rays. United States: N. p., 2000. Web. doi:10.1103/PhysRevLett.84.1378.
Gelmini, Graciela, Kusenko, Alexander, & RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973. Unstable Superheavy Relic Particles as a Source of Neutrinos Responsible for Ultrahigh-Energy Cosmic Rays. United States. https://doi.org/10.1103/PhysRevLett.84.1378
Gelmini, Graciela, Kusenko, Alexander, and RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973. Mon . "Unstable Superheavy Relic Particles as a Source of Neutrinos Responsible for Ultrahigh-Energy Cosmic Rays". United States. https://doi.org/10.1103/PhysRevLett.84.1378.
@article{osti_20215538,
title = {Unstable Superheavy Relic Particles as a Source of Neutrinos Responsible for Ultrahigh-Energy Cosmic Rays},
author = {Gelmini, Graciela and Kusenko, Alexander and RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973},
abstractNote = {Decays of superheavy relic particles may produce extremely energetic neutrinos. Their annihilations on the relic neutrinos can be the origin of the cosmic rays with energies beyond the Greisen-Zatsepin-Kuzmin cutoff. The redshift acts as a cosmological filter selecting the sources at some particular value z{sub e}{+-}{delta}z , for which the present neutrino energy is close to the Z pole of the annihilation cross section. We predict no directional correlation of the ultrahigh-energy cosmic rays with the galactic halo. At the same time, there can be some directional correlations in the data, reflecting the distribution of matter at redshift z=z{sub e}{+-}{delta}z . Both of these features are manifest in the existing data. Our scenario is consistent with the neutrino mass reported by super-Kamiokande and requires no lepton asymmetry or clustering of the background neutrinos. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevLett.84.1378},
url = {https://www.osti.gov/biblio/20215538}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 7,
volume = 84,
place = {United States},
year = {2000},
month = {2}
}