Halo uncertainties in electron recoil events at direct detection experiments [CL]

http://arxiv.org/abs/2011.12896


The dark matter direct detection rates are highly correlated with the phase space distribution of dark matter particles in our galactic neighbourhood. In this paper we make a systematic study of the impact of astrophysical uncertainties on electron recoil events at the direct detection experiments with Xenon and semiconductor detectors. We find that within the Standard Halo Model there can be upto $\sim 35 \%$ deviation from the fiducial choice in the exclusion bounds for these uncertainties. For non-standard halo models motivated by N-body simulations we report conservative modifications of standard exclusion bounds that are correlated with the dynamics of the underlying simulation.

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T. Maity, T. Ray and S. Sarkar
Mon, 30 Nov 20
70/117

Comments: 23 pages, 8 figures and 2 tables