Ultra-High Energy Cosmic Rays, Superheavy Long-Living Particles, and Matter Creation after Inflation

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dc.creatorKuzmin, V. A.
dc.creatorTkachev, I. I.
dc.date1998-02-12
dc.date.accessioned2026-07-07T10:33:37Z
dc.date.available2026-07-07T10:33:37Z
dc.descriptionThe highest energy cosmic rays, above the Greisen-Zatsepin-Kuzmin cut-off of cosmic ray spectrum, may be produced in decays of superheavy long-living X-particles. We conjecture that these particles may be produced naturally in the early Universe from vacuum fluctuations during inflation and may constitute a considerable fraction of Cold Dark Matter. We predict a new cut-off in the UHE cosmic ray spectrum E_{cut-off} < m_inflaton \approx 10^{13} GeV, the exact position of the cut-off and the shape of the cosmic ray spectrum beyond the GZK cut-off being determined by the QCD quark/gluon fragmentation. The Pierre Auger Project installation might discover this phenomenon.
dc.descriptionLaTeX, 8 pages
dc.identifierhttps://arxiv.org/abs/hep-ph/9802304
dc.identifierhttp://arxiv.org/abs/hep-ph/9802304
dc.identifierJETPLett.68:271-275,1998
dc.identifierdoi:10.1134/1.567858
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179178
dc.subjectHigh Energy Physics - Phenomenology
dc.titleUltra-High Energy Cosmic Rays, Superheavy Long-Living Particles, and Matter Creation after Inflation
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