Search for low-mass dark matter WIMPs with 12 ton-day exposure of DarkSide-50

2022/07/25 by The DarkSide-50 Collaboration, :, P. Agnes +140 · 1 voice · 1 citation
Physics and Astronomy · #hep-ex #astro-ph.CO

paper · pdf · doi:10.1103/physrevd.107.063001

arxiv published 2022/07/25 · arxiv updated 2023/02/24

Abstract

We report on the search for dark matter WIMPs in the mass range below 10 GeV/c², from the analysis of the entire dataset acquired with a low-radioactivity argon target by the DarkSide-50 experiment at LNGS. The new analysis benefits from more accurate calibration of the detector response, improved background model, and better determination of systematic uncertainties, allowing us to accurately model the background rate and spectra down to 0.06 keV_er. A 90% C.L. exclusion limit for the spin-independent cross section of 3 GeV/c² mass WIMP on nucleons is set at 6×10^-43 cm², about a factor 10 better than the previous DarkSide-50 limit. This analysis extends the exclusion region for spin-independent dark matter interactions below the current experimental constraints in the [1.2, 3.6] GeV/c² WIMP mass range.

Cited by

• Brazilian Report on Dark Matter 2024

Discussions

• This work is underpinned by the detailed analysis of the full dataset of the DarkSide-50 experiment in the search for WIMP dark matter, also with @UoMPhysics contributions, and also released today as [bsky, 0 points, 1 comments]

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