Ultrahigh-energy cosmic rays from decaying superheavy particles
Nov, 199712 pages
Part of Observing giant cosmic ray air showers from > 10**20-eV particles from space. Proceedings, Workshop, College Park, USA, November 13-15, 1997, 279-296
Published in:
- AIP Conf.Proc. 433 (1998) 1, 279-296
Contribution to:
- Published: Jun 15, 1998
e-Print:
- astro-ph/9801046 [astro-ph]
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Abstract: (AIP)
Decaying superheavy particles can be produced by Topological Defects or, in case they are quasi-stable, as relics from the early Universe. The decays of these particles can be the sources of observed Ultra High Energy Cosmic Rays (E∼1010−1012 GeV). The Topological Defects as the UHE CR sources are critically reviewed and cosmic necklaces and monopole-antiminopole pairs are identified as most plausible sources. The relic superheavy particles are shown to be clustering in the halo and their decays produce UHE CR without GZK cutoff. The Lightest Supersymmetric Particles with Ultra High Energies are naturally produced in the cascades accompanying the decays of superheavy particles. These particles are discussed as UHE carriers in the Universe.Note:
- 9 pages, 3 figures. Typos and problem with figures fixed
- cosmology
- hypothetical particles
- elementary particle decay
- cosmic ray origin
- supersymmetric field theory
- cosmic ray composition
- cosmic ray propagation
- cosmic ray energy spectra
- talk: College Park 1997/11/13
- cosmic radiation: energy spectrum
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