First Dark Matter Search with Nuclear Recoils from the XENONnT Experiment

• Author(s): Aprile, E. ; Abe, K. ; Agostini, F. ; Ahmed Maouloud, S. ; Althueser, L. ; Andrieu, B. ; Angelino, E. ; Angevaare, J. R. ; Antochi, V. C. ; Antón Martin, D. ; Arneodo, F. ; Baudis, L. ; Baxter, A. L. ; Bazyk, M. ; Bellagamba, L. ; Biondi, R. ; Bismark, A. ; Brookes, E. J. ; Brown, A. ; Bruenner, S. ; Bruno, G. ; Budnik, R. ; Bui, T. K. ; Cai, C. ; Cardoso, J. M. R. ; Cichon, D. ; Cimental Chavez, A. P. ; Colijn, A. P. ; Conrad, J. ; Cuenca-García, J. J. ; Cussonneau, J. P. ; D'Andrea, V. ; Decowski, M. P. ; DiGangi, P. ; Di Pede, S. ; Diglio, S. ; Eitel, K. ; Elykov, A. ; Farrell, T. ; Ferella, A. D. ; Ferrari, C. ; Fischer, H. ; Flierman, M. ; Fulgione, W. ; Fuselli, C. ; Gaemers, P. ; Gaior, R. ; Gallo Rosso, A. ; Galloway, M. ; Gao, F. ; Glade-Beucke, R. ; Grandi, L. ; Grigat, J. ; Guan, H. ; Guida, M. ; Hammann, R. ; Higuera, A. ; Hils, C. ; Hoetzsch, L. ; Hood, N. F. ; Howlett, J. ; Iacovacci, M. ; Itow, Y. ; Jakob, J. ; Joerg, F. ; Joy, A. ; Kato, N. ; Kara, M. ; Kavrigin, P. ; Kazama, S. ; Kobayashi, M. ; Koltman, G. ; Kopec, A. ; Kuger, F. ; Landsman, H. ; Lang, R. F. ; Levinson, L.. ; Li, I. ; Li, S. ; Liang, S. ; Lindemann, S. ; Lindner, M. ; Liu, K. ; Loizeau, J. ; Lombardi, F. ; Long, J. ; Lopes, J. A. M. ; Ma, Y. ; Macolino, C. ; Mahlstedt, J. ; Mancuso, A. ; Manenti, L. ; Marignetti, F. ; Marrodán Undagoitia, T. ; Martens, K. ; Masbou, J. ; Masson, D. ; Masson, E. ; Mastroianni, S. ; Messina, M. ; Miuchi, K. ; Mizukoshi, K. ; Molinario, A. ; Moriyama, S. ; Morå, K..D. ; Mosbacher, Y. ; Murra, M. ; Müller, J. ; Ni, K. ; Oberlack, U. ; Paetsch, B. ; Palacio, J. ; Peres, R. ; Peters, C. ; Pienaar, J. ; Pierre, M. ; Pizzella, V. ; Plante, G. ; Qi, J. ; Qin, J. ; Ramírez García, D. ; Singh, R. ; Sanchez, L. ; Santos, J. M. F. dos ; Sarnoff, I. ; Sartorelli, G. ; Schreiner, J. ; Schulte, D. ; Schulte, P. ; Schulze Eißing, H. ; Schumann, M. ; Scotto Lavina, L. ; Selvi, M. ; Semeria, F. ; Shagin, P. ; Shi, S. ; Shockley, E. ; Silva, M. ; Simgen, H. ; Takeda, A. ; Tan, P-L ; Terliuk, A. ; Thers, D. ; Toschi, F. ; Trinchero, G. ; Tunnell, C. ; Tönnies, F. ; Valerius, K. ; Volta, G. ; Weinheimer, C. ; Weiss, M. ; Wenz, D. ; Wittweg, C. ; Wolf, T. ; Wu, V. H. S. ; Xing, Y. ; Xu, D. ; Xu, Z. R. ; Yamashita, M. ; Yang, L. ; Ye, J. ; Yuan, L. ; Zavattini, G. ; Zhong, M. ; Zhu, T.
• Date: 2023
• Persistent ID: https://hdl.handle.net/10316/112215
• Origin: Estudo Geral - Universidade de Coimbra
• Subject(s): High Energy Physics - Experiment; astro-ph.CO; astro-ph.IM; High Energy Physics - Phenomenology; Physics - Instrumentation and Detectors
• Document Type: Journal article
• Language: English

Description

Limit points are included in the submission file

We report on the first search for nuclear recoils from dark matter in the form of weakly interacting massive particles (WIMPs) with the XENONnT experiment, which is based on a two-phase time projection chamber with a sensitive liquid xenon mass of 5.9 ton. During the (1.09±0.03)  ton yr exposure used for this search, the intrinsic ^{85}Kr and ^{222}Rn concentrations in the liquid target are reduced to unprecedentedly low levels, giving an electronic recoil background rate of (15.8±1.3)  events/ton yr keV in the region of interest. A blind analysis of nuclear recoil events with energies between 3.3 and 60.5 keV finds no significant excess. This leads to a minimum upper limit on the spin-independent WIMP-nucleon cross section of 2.58×10^{-47}  cm^{2} for a WIMP mass of 28  GeV/c^{2} at 90% confidence level. Limits for spin-dependent interactions are also provided. Both the limit and the sensitivity for the full range of WIMP masses analyzed here improve on previous results obtained with the XENON1T experiment for the same exposure.

We gratefully acknowledge support from the National Science Foundation, Swiss National Science Foundation, German Ministry for Education and Research, Max Planck Gesellschaft, Deutsche Forschungsgemeinschaft, Helmholtz Association, Dutch Research Council (NWO), Weizmann Institute of Science, Israeli Science Foundation, Binational Science Foundation, Fundacao para a Ciencia e a Tecnologia, R´egion des Pays de la Loire, Knut and Alice Wallenberg Foundation, Kavli Foundation, JSPS Kakenhi and JST FOREST Program in Japan, Tsinghua University Initiative Scientific Research Program, and Istituto Nazionale di Fisica Nucleare. This project has received funding or support from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 860881- HIDDeN. Data processing is performed using infrastructures from the Open Science Grid, the European Grid Initiative, and the Dutch national e-infrastructure with the support of SURF Cooperative. We are grateful to Laboratori Nazionali del Gran Sasso for hosting and supporting the XENON project.