Tracing tau-neutrinos from WIMP-annihilation

Abstract

Accumulation and annihilation of weakly interacting massive particles (WIMPs)\nin the earth and the sun may be observed by the resulting neutrino signal. We\ndemonstrate that, for certain parts of the SUSY parameter space, present and\nfuture neutrino telescopes can expect a higher rate of events due to\ntau-neutrinos than of events due to muon-neutrinos. We show how\n$\\nu_{\\tau}\\leftrightarrow\\nu_{\\mu}$ oscillations, and in the case of the sun\nalso scattering, absorption and regeneration, modify the signal expectation. We\nfind that most currently proposed neutralino models predict equal or increased\nmuon fluxes if $\\nu_{\\tau}\\leftrightarrow\\nu_{\\mu}$ oscillations are included.\n