Tools for Studying Low-Mass Dark Matter at Neutrino Detectors
  We determine the neutrino spectra arising from low-mass (4-10 GeV) dark
matter annihilating in the sun. We also determine the low-mass dark matter
capture rates (element by element in the sun), assuming dark matter interacts
either through elastic contact interactions, elastic long-range interactions,
or inelastic contact interactions. These are the non-detector-specific data
needed for determining the sensitivity of a neutrino detector to dark matter
annihilating in the sun. As an application, we estimate the sensitivity of a
one kiloton liquid scintillation neutrino detector (such as KamLAND) and LBNE
(LAr-based) to low-mass dark matter with long-range interactions and compare
this to the expected CDMS sensitivity. It is found that KamLAND's sensitivity
can exceed that obtainable from the current CDMS data set by up to two orders
of magnitude.
