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 keVNR, 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., Anton 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). [10.1103/msw4-t342]

WIMP Dark Matter Search Using a 3.1 Tonne-Year Exposure of the XENONnT Experiment

Iacovacci M.;Mastroianni S.;
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 keVNR, 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
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., Anton 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). [10.1103/msw4-t342]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/1045646
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