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arXiv:astro-ph/0011231 (astro-ph)
[Submitted on 13 Nov 2000]

Title:Ultrahigh energy cosmic rays and new particle physics

Authors:M. Kachelriess
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Abstract: The current status of the ultrahigh energy cosmic ray (UHE CR) enigma and several proposed solutions involving particle physics beyond the standard model are discussed. Emphasis is given to top--down models, and as a main example, supermassive dark matter as galactic source for UHE CR and the status of its experimental signatures (galactic anisotropy, chemical composition and clustering) is reviewed. Then different approaches to calculate fragmentation spectra of supermassive particles are discussed. Finally, it is argued that UHE neutrinos cannot be - neither directly or indirectly - responsible for the observed vertical air showers.
Comments: 14 pages, 5 figures. Invited talk at ``CAPP-2K'', Verbier, July 2000
Subjects: Astrophysics (astro-ph); High Energy Physics - Phenomenology (hep-ph)
Report number: CERN-TH 2000-324
Cite as: arXiv:astro-ph/0011231
  (or arXiv:astro-ph/0011231v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0011231
Related DOI: https://doi.org/10.1063/1.1363517

Submission history

From: Michael Kachelriess [view email]
[v1] Mon, 13 Nov 2000 20:03:05 UTC (47 KB)
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