Distinguishing among dark matter annihilation channels with neutrino
  telescopes
  We investigate the prospects for distinguishing dark matter annihilation
channels using the neutrino flux from gravitationally captured dark matter
particles annihilating inside the sun. We show that, even with experimental
error in energy reconstruction taken into account, the spectrum of contained
muon tracks may be used to discriminate neutrino final states from the gauge
boson/charged lepton final states and to determine their corresponding
branching ratios. We also discuss the effect of $\nu_\tau$ regeneration inside
the sun as a novel method to distinguish the flavor of final state neutrinos.
This effect as evidenced in the muon spectrum becomes important for dark matter
masses above 300 GeV. Distinguishing primary neutrinos and their flavor may be
achieved using multi-year data from a detector with the same capability and
effective volume as the IceCube/DeepCore array.
