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Search for Light Dark Matter with NEWS-G at the Laboratoire Souterrain de Modane Using a Methane Target

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arxiv 2407.12769 v2 pith:WA7H74A2 submitted 2024-07-17 hep-ex astro-ph.CO

M. M. Arora , L. Balogh , C. Beaufort , A. Brossard , M. Chapellier , J. Clarke , E. C. Corcoran , J.-M. Coquillat
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A. Dastgheibi-Fard Y. Deng D. Durnford C. Garrah G. Gerbier I. Giomataris G. Giroux P. Gorel M. Gros P. Gros O. Guillaudin E. W. Hoppe I. Katsioulas F. Kelly P. Knights P. Lautridou A. Makowski I. Manthos R. D. Martin J. Matthews H. M. McCallum H. Meadows L. Millins J.-F. Muraz T. Neep K. Nikolopoulos N. Panchal M.-C. Piro N. Rowe D. Santos G. Savvidis I. Savvidis D. Spathara F. Vazquez de Sola Fernandez R. Ward
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classification hep-exastro-ph.CO
keywords mathrmdarkmatterlaboratoirelightmassmethanemodane
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abstract

The NEWS-G direct detection experiment uses spherical proportional counters to search for light dark matter candidates. New results from a 10 day physics run with a $135\,\mathrm{cm}$ in diameter spherical proportional counter at the Laboratoire Souterrain de Modane are reported. The target consists of $114\,\mathrm{g}$ of methane, providing sensitivity to dark matter spin-dependent coupling to protons. New constraints are presented in the mass range $0.17$ to $1.2\,\mathrm{GeV/c^2}$, with a 90% confidence level cross-section upper limit of $30.9\,\mathrm{pb}$ for a mass of $0.76\,\mathrm{GeV/c^2}$.

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Cited by 4 Pith papers

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  1. Ubiquitous Corotation of Dark Matter Halos: Implications for Direct Detection

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    Dark matter in simulated Milky Way analogues preferentially corotates with the baryonic disk, suppressing predicted direct-detection rates for light WIMPs, reducing directional modulation, and producing a 21% astrophy...

  2. First Directional Dark Matter Limits from the MIMAC {\mu}-TPC Detector

    astro-ph.CO 2026-07 conditional novelty 6.0 of 10

    With ~0.02 kg·days of hydrogen and a data-driven ON/OFF galactic-map analysis, MIMAC finds no Cygnus-directed excess and sets σ_SD-p < 6.65×10^{-36} cm² (90% CL).

  3. Complementary Planetary Spectroscopy Probes of Dark Matter

    hep-ph 2025-08 conditional novelty 6.0 of 10

    Dark matter annihilation energy deposited in planetary atmospheres and interiors, compared against existing UV airglow and heat flow measurements, yields new sub-GeV scattering constraints and long-lived mediator reach.

  4. Uncertainties in tellurium-based dark matter searches stemming from nuclear structure uncertainties

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Nuclear shell-model uncertainties cause over 100% uncertainties on some tellurium-based dark matter coupling limits, comparable to xenon, while leaving the annual modulation phase unchanged.

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