Updated Constraints on the Dark Matter Interpretation of CDMS-II-Si Data
Abstract
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.
Keywords
Cite
@article{arxiv.1703.06892,
title = {Updated Constraints on the Dark Matter Interpretation of CDMS-II-Si Data},
author = {Samuel J. Witte and Graciela B. Gelmini},
journal= {arXiv preprint arXiv:1703.06892},
year = {2017}
}
Comments
v2: Published version. Figure 7 added and text modified, conclusions unchanged. v1: 18 pages, 6 figures