Cosmic-Ray Antiprotons as a Probe of a Photino-Dominated Universe

Joseph Silk and Mark Srednicki
Phys. Rev. Lett. 53, 624 – Published 6 August 1984
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Abstract

Observational tests of the hypothesis that the universe is flat and dominated by dark matter in the form of massive photinos include the production of significant fluxes of cosmic rays and gamma rays in our galactic halo. Specification of the cosmological photino density and the masses of scalar quarks and leptons determines the present annihilation rate. The predicted number of low-energy cosmic-ray antiprotons is comparable to the observed flux.

  • Received 8 June 1984

DOI:https://doi.org/10.1103/PhysRevLett.53.624

©1984 American Physical Society

Authors & Affiliations

Joseph Silk

  • Astronomy Department, University of California, Berkeley, California 94720, and Institute for Theoretical Physics, University of California, Santa Barbara, California 93106

Mark Srednicki

  • Physics Department, University of California, Santa Barbara, California 93106

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Vol. 53, Iss. 6 — 6 August 1984

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