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arXiv · 2407.12769

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

M. M. Arora·L. Balogh·C. Beaufort·A. Brossard·M. Chapellier·J. Clarke·E. C. Corcoran·J. -M. Coquillat·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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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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M. M. Arora, L. Balogh, C. Beaufort, A. Brossard, M. Chapellier, J. Clarke, E. C. Corcoran, J. -M. Coquillat, 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. 2024-07-17. Search for Light Dark Matter with NEWS-G at the Laboratoire Souterrain de Modane Using a Methane Target. https://doi.org/10.1103/physrevlett.134.141002

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