A HiRes limit on the flux of the cosmogenic neutrinos

Details A HiRes limit on the flux of the cosmogenic neutrinos A HiRes limit on the flux of the cosmogenic neutrinos

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007phdt........18d&link_type=abstract

Proquest Dissertations And Theses 2007. Section 0240, Part 0606 108 pages; [Ph.D. dissertation].United States -- Utah: The Univ

Physics

Hires Fly'S Eye, Uhe Cosmic Rays, Cosmogenic Neutrinos

Scientific paper

The energy flux spectrum of ultra high energy cosmic rays above 50 EeV (10 18 eV ) measured by the High Resolution Fly's Eye (HiRes) experiment suggests the existence of the expected Greisen-Zatsepin-Kuzmin (GZK) suppression. This implies a flux of cosmogenic neutrinos. Tau leptons produced in charged current interactions emerging from the surrounding mountains and the earth crust provide opportunities for HiRes to detect extensive air showers initiated by tau decay products from the interactions of these cosmogenic neutrinos. We generated tau neutrino Monte Carlo events with a modified All Neutrino Interaction SImulation (ANIS) program and simulated the response of HiRes detectors to those events. As no neutrino events are found in the HiRes data, an upper limit of j ( E ) = (241 ± 9) E 2 cm ^2 s ^1 sr = 1 eV 1 is set for the energy range from 10 18 eV to 10 21 eV with a 90% confidence level.

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