Determination of absolute neutrino masses from bursts of Z bosons in cosmic rays.

Clicks: 209
ID: 93948
2002
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Abstract
Ultrahigh energy neutrinos (UHEnu) scatter on relic neutrinos (Rnu) producing Z bosons, which can decay hadronically producing protons (Z burst). We compare the predicted proton spectrum with the observed ultrahigh energy cosmic ray (UHECR) spectrum and determine the mass of the heaviest Rnu via a maximum likelihood analysis. Our prediction depends on the origin of the powerlike part of the UHECR spectrum: m(nu) = 2.75(+1.28)(-0.97) eV for Galactic halo and 0.26(+0.20)(-0.14) eV for extragalactic origin. The necessary UHEnu flux should be detected in the near future.
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fodor2002determinationphysical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Fodor, Z;Katz, S D;Ringwald, A;
Journal physical review letters
Year 2002
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