First Indication of Solar B 8 Neutrinos via Coherent Elastic Neutrino-Nucleus Scattering with XENONnT

作者：E. Aprile, J. Aalbers, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, D. Antón Martin, F. Arneodo, L. Baudis, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, K. Boese, A. Brown, G. Bruno, R. Budnik, Ce 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, A. Elykov, A. D. Ferella, C. Ferrari, H. Fischer, T Flehmke, M. Flierman, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaïor, M. Galloway, F. Gao, S. Ghosh, R Giacomobono, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guida, P Gyorgy, R. Hammann, A. Higuera, C. Hils, Luisa Hötzsch, N. F. Hood, M. Iacovacci, Y. Itow, J. Jakob, Florian Jörg, Y Kaminaga, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, D Koke, A. Kopec, F. Kuger, H. Landsman, R. F. Lang, L. J. Levinson, I. Li, S. Li, S. Liang, Y.-T. Lin, S. Lindemann, M. Lindner, K. Liu, Ming Liu, J. Loizeau, F. Lombardi, J. Long, J. A. M. Lopes, T.C. Luce, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, Fabrizio Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, E. Masson, S. Mastroianni, A Melchiorre, Jon F. Merz, M. Messina, Agnieszka Michael, K. Miuchi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller, K. Ni, U. Oberlack, B. Paetsch, Y. Pan, Q. Pellegrini, R. Peres, C. Peters, J. Pienaar, M. Pierre, G. Plante, T. R. Pollmann, L Principe, Jianyang Qi, J. Qin, D. Ramírez García, M Rajado, R. Singh, L. Escudero Sanchez, J.M.F. dos Santos, I. Sarnoff, G. Sartorelli, J. Schreiner, P. Schulte, H. Schulze Eißing, M. Schümann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, S. Shi, M. Silva, H. Simgen, A. Takeda, P.-L. Tan, D. Thers, F. Toschi, G. Trinchero, C. Tunnell, F. Tönnies, K. Valerius, S. Vecchi, S Vetter, F. I. Villazon Solar, G. Volta, C. Weinheimer, Micha Weiss, D. Wenz, C. Wittweg, V. H. S. Wu, Y. Xing, D. Xu, Z. Xu, M. Yamashita, Lina Yang, Ye J, L. Yuan, G. Zavattini, M. Zhong · 发表于：Physical Review Letters · 年份：2024 · DOI：10.1103/physrevlett.133.191002 · 被引用次数：99 · 研究领域：Dark Matter and Cosmic Phenomena、Particle physics theoretical and experimental studies、Neutrino Physics Research

We present the first measurement of nuclear recoils from solar ^{8}B neutrinos via coherent elastic neutrino-nucleus scattering with the XENONnT dark matter experiment. The central detector of XENONnT is a low-background, two-phase time projection chamber with a 5.9 t sensitive liquid xenon target. A blind analysis with an exposure of 3.51 t×yr resulted in 37 observed events above 0.5 keV, with (26.4_{-1.3}^{+1.4}) events expected from backgrounds. The background-only hypothesis is rejected with a statistical significance of 2.73σ. The measured ^{8}B solar neutrino flux of (4.7_{-2.3}^{+3.6})×10^{6} cm^{-2} s^{-1} is consistent with results from the Sudbury Neutrino Observatory. The measured neutrino flux-weighted CEνNS cross section on Xe of (1.1_{-0.5}^{+0.8})×10^{-39} cm^{2} is consistent with the Standard Model prediction. This is the first direct measurement of nuclear recoils from solar neutrinos with a dark matter detector.