We report on a search for weakly interacting massive particle (WIMP) dark matter (DM) via elastic DM-xenon-nucleus interactions in the XENONnT experiment. We combine datasets from the first and second science campaigns resulting in a total exposure of 3.1 tonne-years. In a blind analysis of nuclear recoil events with energies above 3.8  keV_NR, we find no significant excess above background. We set new upper limits on the spin-independent WIMP-nucleon scattering cross section for WIMP masses above 10  GeV/c² with a minimum of 1.7×10⁻⁴⁷  cm² at 90% confidence level for a WIMP mass of 30  GeV/c². We achieve a best median sensitivity of 1.4×10⁻⁴⁷  cm² for a 41  GeV/c² WIMP. Compared to the result from the first XENONnT science dataset, we improve our sensitivity by a factor of up to 1.8.

WIMP dark matter search using a 3.1 tonne-year exposure of the XENONnT experiment / Aprile, E., Aalbers, J., Abe, K., Ahmed Maouloud, S., Althueser, L., Andrieu, B., Angelino, E., Antón Martin, D., Armbruster, S.R., Arneodo, F., Baudis, L., Bazyk, M., Bellagamba, L., Biondi, R., Bismark, A., Boese, K., Brown, A., Bruno, G., Budnik, R., Cai, C., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 135:22(2025), pp. 1-9. [10.1103/msw4-t342]

WIMP dark matter search using a 3.1 tonne-year exposure of the XENONnT experiment

Capelli C.;
2025

Abstract

We report on a search for weakly interacting massive particle (WIMP) dark matter (DM) via elastic DM-xenon-nucleus interactions in the XENONnT experiment. We combine datasets from the first and second science campaigns resulting in a total exposure of 3.1 tonne-years. In a blind analysis of nuclear recoil events with energies above 3.8  keV_NR, we find no significant excess above background. We set new upper limits on the spin-independent WIMP-nucleon scattering cross section for WIMP masses above 10  GeV/c² with a minimum of 1.7×10⁻⁴⁷  cm² at 90% confidence level for a WIMP mass of 30  GeV/c². We achieve a best median sensitivity of 1.4×10⁻⁴⁷  cm² for a 41  GeV/c² WIMP. Compared to the result from the first XENONnT science dataset, we improve our sensitivity by a factor of up to 1.8.
2025
dark matter; wimps; liquid xenon; xenonnt; direct detection
01 Pubblicazione su rivista::01a Articolo in rivista
WIMP dark matter search using a 3.1 tonne-year exposure of the XENONnT experiment / Aprile, E., Aalbers, J., Abe, K., Ahmed Maouloud, S., Althueser, L., Andrieu, B., Angelino, E., Antón Martin, D., Armbruster, S.R., Arneodo, F., Baudis, L., Bazyk, M., Bellagamba, L., Biondi, R., Bismark, A., Boese, K., Brown, A., Bruno, G., Budnik, R., Cai, C., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 135:22(2025), pp. 1-9. [10.1103/msw4-t342]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1773808
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