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      Ultra-High Energy Neutrino Fluxes and Their Constraints

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          Abstract

          Applying our recently developed propagation code we review extragalactic neutrino fluxes above 10^{14} eV in various scenarios and how they are constrained by current data. We specifically identify scenarios in which the cosmogenic neutrino flux, produced by pion production of ultra high energy cosmic rays outside their sources, is considerably higher than the "Waxman-Bahcall bound". This is easy to achieve for sources with hard injection spectra and luminosities that were higher in the past. Such fluxes would significantly increase the chances to detect ultra-high energy neutrinos with experiments currently under construction or in the proposal stage.

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          Journal
          06 May 2002
          2002-12-13
          Article
          10.1103/PhysRevD.66.063004
          hep-ph/0205050
          d4afc5eb-01d6-40e2-8898-dd04ef1c6372
          History
          Custom metadata
          MPI-PhT/2002-17
          Phys.Rev. D66 (2002) 063004
          11 pages, 15 figures, version published in Phys.Rev.D
          hep-ph astro-ph

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