On the primary particle type of the most energetic Fly's Eye event

Simple item page
dc.creatorRisse, M.
dc.creatorHomola, P.
dc.creatorEngel, R.
dc.creatorGora, D.
dc.creatorHeck, D.
dc.creatorPekala, J.
dc.creatorWilczynska, B.
dc.creatorWilczynski, H.
dc.date2004-10-29
dc.date.accessioned2026-07-07T06:23:53Z
dc.date.available2026-07-07T06:23:53Z
dc.descriptionThe longitudinal profile of the 320 EeV event observed by the Fly's Eye experiment is analysed. A method of testing the hypothesis of a specific primary particle type is described. Results for different particle types are summarized. For hadronic primaries between proton and iron nuclei, the discrepancy between observed and simulated profiles is in the range of 0.6-1.0 sigma for two different hadronic interaction models investigated. For primary photons, the discrepancy is 1.5sigma assuming a standard extrapolation of the photonuclear cross-section with energy. Larger values of the cross-section at highest energies make primary photon showers more similar to hadron-initiated events. The influence of varying the extrapolation of the photonuclear cross-section is studied.
dc.description3 pages, 3 figures, 2 tables. To appear in Nucl. Phys. B (Proceedings of XIII. ISVHECRI, Pylos, September 2004)
dc.identifierhttps://arxiv.org/abs/astro-ph/0410739
dc.identifierhttp://arxiv.org/abs/astro-ph/0410739
dc.identifierNucl. Phys. B (Proc. Suppl.) 151 (2006) 96
dc.identifierdoi:10.1016/j.nuclphysbps.2005.07.017
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96360
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleOn the primary particle type of the most energetic Fly's Eye event
dc.typetext

Files

Collections

arXiv