New Hadrons as Ultra-High Energy Cosmic Rays

Details New Hadrons as Ultra-High Energy Cosmic Rays New Hadrons as Ultra-High Energy Cosmic Rays

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....2..691k&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

Scientific paper

New hadrons with mass 1.5-3 GeV can be responsible for ultra-high energy cosmic rays (UHECR) at the highest energies E > 1020 eV. For the first time we constructed a self-consistent model which includes the production of such hadrons in proton collisions with infrared/optical photons in astrophysical sources. This production mechanism, in contrast to proton-proton collisions, requires the acceleration of protons only to energies E ≤ 1021 eV. The diffuse gamma-ray and neutrino fluxes in this model obey all existing experimental limits. We predict large UHE neutrino fluxes well above the sensitivity of the next generation of high-energy neutrino experiments. As an example we study hadrons containing a light bottom squark. Such models can be tested by accelerator experiments, UHECR observatories and neutrino telescopes.

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