Probing dark matter streams with CoGeNT
  We examine the future sensitivity of CoGeNT to the presence of dark matter
streams and find that consideration of streams in the data may lead to
differences in the interpretation of the results. We show the allowed particle
mass and cross section for different halo parameters, assuming spin-independent
elastic scattering. As an example, we choose a stream with the same velocity
profile as that of the Sagittarius stream (and in the Solar neighborhood) and
find that, with an exposure of $\sim$ 10 kg year, the CoGeNT results can be
expected to exclude the SHM-only halo in favor of an SHM+stream halo at the 95%
(99.7%) confidence level provided the stream contributes 3% (5%) of the local
dark matter density. The presence of a significant stream component may result
in incorrect estimates of the particle mass and cross section unless the
presence of the stream is taken into account. We conclude that the CoGeNT
experiment is sensitive to streams and care should be taken to include the
possibility of streams when analyzing experimental results.
