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arXiv · hep-ph/0310054

Footprints of Super-GZK Cosmic Rays in the Pilliga State Forest

Luis Anchordoqui·Haim Goldberg
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Abstract

High energy cosmic ray data collected by the SUGAR Collaboration in the Pilliga State Forest have been re-analyzed using up-to-date shower simulations. Complete, inclined angle, Monte Carlo simulations reveal 2 events with energies in excess of $7\times 10^{19}$ eV at 95% CL, independent of the choice of hadronic interaction model and of chemical composition of the primary. An additional 3 events, with mean energy $\agt 7\times 10^{19}$ eV, were also re-analyzed in the same manner. A lower bound on the flux at the high end of the spectrum, as observed in the Southern sky, is presented on the basis of our analysis.

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Luis Anchordoqui, Haim Goldberg. 2003-10-06. Footprints of Super-GZK Cosmic Rays in the Pilliga State Forest. https://doi.org/10.1016/j.physletb.2003.12.072

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