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arXiv · 2502.18005

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

E. Aprile·J. Aalbers·K. Abe·S. Ahmed Maouloud·L. Althueser·B. Andrieu·E. Angelino·D. Antón Martin·S. R. Armbruster·F. Arneodo·L. Baudis·M. Bazyk·L. Bellagamba·R. Biondi·A. Bismark·K. Boese·A. Brown·G. Bruno·R. Budnik·C. Cai·C. Capelli·J. M. R. Cardoso·A. P. Cimental Chávez·A. P. Colijn·J. Conrad·J. J. Cuenca-García·V. D'Andrea·L. C. Daniel Garcia·M. P. Decowski·A. Deisting·C. Di Donato·P. Di Gangi·S. Diglio·K. Eitel·S. el Morabit·A. Elykov·A. D. Ferella·C. Ferrari·H. Fischer·T. Flehmke·M. Flierman·D. Fuchs·W. Fulgione·C. Fuselli·P. Gaemers·R. Gaior·F. Gao·S. Ghosh·R. Giacomobono·F. Girard·R. Glade-Beucke·L. Grandi·J. Grigat·H. Guan·M. Guida·P. Gyorgy·R. Hammann·A. Higuera·C. Hils·L. Hoetzsch·N. F. Hood·M. Iacovacci·Y. Itow·J. Jakob·F. Joerg·Y. Kaminaga·M. Kara·P. Kavrigin·S. Kazama·P. Kharbanda·M. Kobayashi·D. Koke·K. Kooshkjalali·A. Kopec·H. Landsman·R. F. Lang·L. Levinson·I. Li·S. Li·S. Liang·Z. Liang·Y. -T. Lin·S. Lindemann·M. Lindner·K. Liu·M. Liu·J. Loizeau·F. Lombardi·J. Long·J. A. M. Lopes·G. M. Lucchetti·T. Luce·Y. Ma·C. Macolino·J. Mahlstedt·A. Mancuso·L. Manenti·F. Marignetti·T. Marrodán Undagoitia·K. Martens
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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 $3.8\,\mathrm{keV_{NR}}$, 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 $10\,\mathrm{GeV}/c^2$ with a minimum of $1.7\,\times\,10^{-47}\,\mathrm{cm^2}$ at $90\,\%$ confidence level for a WIMP mass of $30\,\mathrm{GeV}/c^2$. We achieve a best median sensitivity of $1.4\,\times\,10^{-47}\,\mathrm{cm^2}$ for a $41\,\mathrm{GeV}/c^2$ WIMP. Compared to the result from the first XENONnT science dataset, we improve our sensitivity by a factor of up to 1.8.

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E. Aprile, J. Aalbers, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, D. Antón Martin, S. R. Armbruster, F. Arneodo, L. Baudis, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, K. Boese, A. Brown, G. Bruno, R. Budnik, C. Cai, C. Capelli, J. M. R. Cardoso, A. P. Cimental Chávez, A. P. Colijn, J. Conrad, J. J. Cuenca-García, V. D'Andrea, L. C. Daniel Garcia, M. P. Decowski, A. Deisting, C. Di Donato, P. Di Gangi, S. Diglio, K. Eitel, S. el Morabit, A. Elykov, A. D. Ferella, C. Ferrari, H. Fischer, T. Flehmke, M. Flierman, D. Fuchs, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, F. Gao, S. Ghosh, R. Giacomobono, F. Girard, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guida, P. Gyorgy, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. F. Hood, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, Y. Kaminaga, M. Kara, P. Kavrigin, S. Kazama, P. Kharbanda, M. Kobayashi, D. Koke, K. Kooshkjalali, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, Z. Liang, Y. -T. Lin, S. Lindemann, M. Lindner, K. Liu, M. Liu, J. Loizeau, F. Lombardi, J. Long, J. A. M. Lopes, G. M. Lucchetti, T. Luce, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens. 2025-02-25. WIMP Dark Matter Search using a 3.1 Tonne-Year Exposure of the XENONnT Experiment. https://doi.org/10.1103/msw4-t342

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