Search for Coherent Elastic Scattering of Solar 8B Neutrinos in the XENON1T Dark Matter Experiment

Aprile, E.; Aalbers, J.; Agostini, F.; Ahmed Maouloud, S.; Alfonsi, M.; Althueser, L.; Amaro, F. D.; Andaloro, S.; Antochi, V. C.; Angelino, E.; Angevaare, J. R.; Arneodo, F.; Baudis, L.; Bauermeister, B.; Bellagamba, L.; Benabderrahmane, M. L.; Brown, A.; Brown, E.; Bruenner, S.; Bruno, G.; Budnik, R.; Capelli, C.; Cardoso, J. M. R.; Cichon, D.; Cimmino, B.; Clark, M.; Coderre, D.; Colijn, A. P.; Conrad, J.; Cuenca, J.; Cussonneau, J. P.; Decowski, M. P.; Depoian, A.; Di Gangi, P.; Di Giovanni, A.; Di Stefano, R.; Diglio, S.; Elykov, A.; Ferella, A. D.; Fulgione, W.; Gaemers, P.; Gaior, R.; Galloway, M.; Gao, F.; Grandi, L.; Hils, C.; Hiraide, K.; Hoetzsch, L.; Howlett, J.; Iacovacci, M.; Itow, Y.; Joerg, F.; Kato, N.; Kazama, S.; Kobayashi, M.; Koltman, G.; Kopec, A.; Landsman, H.; Lang, R. F.; Levinson, L.; Liang, S.; Lindemann, S.; Lindner, M.; Lombardi, F.; Long, J.; Lopes, J. A. M.; Ma, Y.; Macolino, C.; Mahlstedt, J.; Mancuso, A.; Manenti, L.; Manfredini, A.; Marignetti, F.; Marrodan Undagoitia, T.; Martens, K.; Masbou, J.; Masson, D.; Mastroianni, S.; Messina, M.; Miuchi, K.; Mizukoshi, K.; Molinario, A.; Mora, K.; Moriyama, S.; Mosbacher, Y.; Murra, M.; Naganoma, J.; Ni, K.; Oberlack, U.; Odgers, K.; Palacio, J.; Pelssers, B.; Peres, R.; Pierre, M.; Pienaar, J.; Pizzella, V.; Plante, G.; Qi, J.; Qin, J.; Ramirez Garcia, D.; Reichard, S.; Rocchetti, A.; Rupp, N.; Dos Santos, J. M. F.; Sartorelli, G.; Schreiner, J.; Schulte, D.; Schulze Eissing, H.; Schumann, M.; Scotto Lavina, L.; Selvi, M.; Semeria, F.; Shagin, P.; Shockley, E.; Silva, M.; Simgen, H.; Takeda, A.; Therreau, C.; Thers, D.; Toschi, F.; Trinchero, G.; Tunnell, C.; Valerius, K.; Vargas, M.; Volta, G.; Wei, Y.; Weinheimer, C.; Weiss, M.; Wenz, D.; Wittweg, C.; Wolf, T.; Xu, Z.; Yamashita, M.; Ye, J.; Zavattini, G.; Zhang, Y.; Zhu, T.; Zopounidis, J. P.

doi:10.1103/PhysRevLett.126.091301

We report on a search for nuclear recoil signals from solar B8 neutrinos elastically scattering off xenon nuclei in XENON1T data, lowering the energy threshold from 2.6 to 1.6 keV. We develop a variety of novel techniques to limit the resulting increase in backgrounds near the threshold. No significant B8 neutrinolike excess is found in an exposure of 0.6 t×y. For the first time, we use the nondetection of solar neutrinos to constrain the light yield from 1-2 keV nuclear recoils in liquid xenon, as well as nonstandard neutrino-quark interactions. Finally, we improve upon world-leading constraints on dark matter-nucleus interactions for dark matter masses between 3 and 11 GeV c-2 by as much as an order of magnitude.