{"paper":{"title":"Light Dark Matter Search with 7.8 Tonne-Year of Ionization-Only Data in XENONnT","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.IM","hep-ph","physics.ins-det"],"primary_cat":"hep-ex","authors_text":"A. Bismark, A. Deisting, A. D. Ferella, A. Elykov, A. Kopec, A. Li, A. Melchiorre, A. Michel, A. Molinario, A. P. Cimental Ch\\'avez, A. P. Colijn, A. Prajapati, A. Ravindran, A. Razeto, A. Stevens, A. Takeda, B. Andrieu, B. Paetsch, B. von Krosigk, C. Cai, C. Capelli, C. Di Donato, C. D. Tunnell, C. Ferrari, C. Fuselli, C. Hils, C. Macolino, C. Szyszka, C. T. Oba Ishikawa, C. Weinheimer, C. Wittweg, D. Ant\\'on Martin, D. Fuchs, D. Koke, D. Ram\\'irez Garc\\'ia, D. Thers, D. Wenz, D. Xu, E. Angelino, E. Aprile, F. Arneodo, F. Gao, F. Girard, F. Joerg, F. Lombardi, F. Marignetti, F. N. Semler, F. Pompa, F. Semeria, G. Bruni, G. Bruno, G. C. Madduri, G. M. Lucchetti, G. Plante, G. Sartorelli, G. Trinchero, G. Volta, G. Zavattini, H. Fischer, H. Guan, H. Landsman, H. Schulze Ei{\\ss}ing, H. Simgen, I. Li, I. Sarnoff, J. Aalbers, J. A. M. Lopes, J. Conrad, J. Grigat, J. Jakob, J. J. Cuenca-Garc\\'ia, J. Mahlstedt, J. Masbou, J. Merz, J. M. F. dos Santos, J. M. R. Cardoso, J. M\\\"uller, J. Pienaar, J. Qin, J. Schreiner, J. Yang, J. Ye, K. Abe, K. Boese, K. Eitel, K. Kooshkjalali, K. Liu, K. Martens, K. Miuchi, K. Ni, K. Valerius, L. Althueser, L. Baudis, L. Bellagamba, L. C. Daniel Garcia, L. Grandi, L. Hoetzsch, L. Levinson, L. Principe, L. Sanchez, L. Scotto Lavina, L. Yang, L. Yuan, M. Adrover, M. Bazyk, M. Flierman, M. Guida, M. Iacovacci, M. Kara, M. Kobayashi, M. Lindner, M. Liu, M. Messina, M. Murra, M. P. Decowski, M. Pierre, M. Schumann, M. Selvi, M. Weiss, M. Yamashita, M. Yoshida, M. Zhong, N. F. Hood, P. Di Gangi, P. Gyorgy, P. Kharbanda, P.-L. Tan, P. Schulte, P. Shagin, Q. Pellegrini, R. Biondi, R. Budnik, R. Elleboro, R. F. Lang, R. Frankel, R. Giacomobono, R. Glade-Beucke, R. Hammann, R. M. Braun, R. Peres, R. Singh, S. Ahmed Maouloud, S. Diglio, S. el Morabit, S. Kazama, S. Li, S. Liang, S. Lindemann, S. Mastroianni, S. Moriyama, S. Ouahada, S. R. Armbruster, S. Shi, S. Vecchi, S. Vetter, T. Flehmke, T. Luce, T. Marrod\\'an Undagoitia, T. R. Pollmann, T. Zhu, U. Oberlack, V. Beligotti, V. D'Andrea, V. H. S. Wu, V. Mazza, W. Fulgione, Y. Itow, Y. Kaminaga, Y. Ma, Y. Pan, Y. Takeuchi, Y.-T. Lin, Y. Xing, Y. Zhao, Z. Liang, Z. Song, Z. Xu","submitted_at":"2026-01-16T13:51:36Z","abstract_excerpt":"We report on a blinded search for dark matter (DM) using ionization-only (S2-only) signals in XENONnT with a total exposure of $7.83\\mathrm{tonne}\\times\\mathrm{year}$ over 579 days in three science runs. Dedicated background suppression techniques and the first complete S2-only background model in XENONnT provide sensitivity to nuclear recoils of [0.5, 5.0] $\\mathrm{keV_\\mathrm{nr}}$ and electronic recoils of [0.04, 0.7] $\\mathrm{keV_\\mathrm{ee}}$. No significant excess over the expected background is observed, and we set 90\\% confidence level upper limits on spin-independent DM--nucleon and s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.11296","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2601.11296/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}