Neutrino flavor ratio on Earth and at astrophysical sources

Abstract

We present the reconstruction of neutrino flavor ratios at astrophysical sources. For distinguishing the pion source and the muon-damped source to the 3 a level, the neutrino flux ratios, R equivalent to phi(nu(mu))/(phi(nu(e)) + phi(nu(r))) and S equivalent to phi(nu(e))/(phi(nu(r))), need to be measured in accuracies better than 10%. (C) 2010 Elsevier B.V. All rights reserved.