Superheavy Dark Matter

Physics

Scientific paper

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Scientific paper

Superheavy particles are produced at the end of inflation and could, for a likely set of parameters (e.g. mass MX ~ 1013 GeV and reheating temperature TR ~ 109 GeV), constitute the main part of dark matter. If they are metastable, their decay products may dominate the ultra-high energy cosmic ray flux above ~ 8 × 1019 eV. The main signatures of this scenario, galactic anisotropy and photon dominance, should allow the Auger experiment to test this hypothesis conclusively within one year of data taking.

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