Updated Constraints on the Dark Matter Interpretation of CDMS-II-Si Data
  We present an updated halo-dependent and halo-independent analysis of viable
light WIMP dark matter candidates which could account for the excess observed
in CDMS-II-Si. We include recent constraints from LUX, PandaX-II, and PICO-60,
as well as projected sensitivities for XENON1T, SuperCDMS SNOLAB, LZ, DARWIN,
DarkSide-20k, and PICO-250, on candidates with spin-independent isospin
conserving and isospin-violating interactions, and either elastic or exothermic
scattering. We show that there exist dark matter candidates which can explain
the CDMS-II-Si data and remain very marginally consistent with the null results
of all current experiments, however such models are highly tuned, making a dark
matter interpretation of CDMS-II-Si very unlikely. We find that these models
can only be ruled out in the future by an experiment comparable to LZ or
PICO-250.
