The case for antiparticles in the extragalactic cosmic radiation

Details The case for antiparticles in the extragalactic cosmic radiation The case for antiparticles in the extragalactic cosmic radiation

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984natur.309...37s&link_type=abstract

Nature (ISSN 0028-0836), vol. 309, May 3, 1984, p. 37, 38.

Physics

22

Antiparticles, Cosmic Rays, Intergalactic Media, Particle Theory, Antiprotons, Energy Spectra, Unified Field Theory

Scientific paper

The presence of an excess of low-energy antiprotons in the primary cosmic radiation has given rise to several possible explanations, some of which involve exotic processes such as mini-black holes and extragalactic antiparticles. The latter possibility is considered, and it is shown that there are interesting implications for the cosmic radiation at higher energies. Indeed, it may be possible to account for a previously puzzling feature of the cosmic ray spectrum (a 'bump' in the range between 10 to the 14th and 10 to the 15th eV) by hypothesizing a primary extragalactic origin for the bulk of the observed cosmic ray antiprotons, although such an explanation is not unique. In this model, most of the cosmic rays above 10 to the 15th eV are extragalactic. A method of testing this hypothesis experimentally is described.

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