Excess electronic recoil events in XENON1T

Aprile, E.; Aalbers, J.; Agostini, F.; Alfonsi, M.; Althueser, L.; Amaro, F. D.; Antochi, V. C.; Angelino, E.; Angevaare, J. R.; Arneodo, F.; Barge, D.; Baudis, L.; Bauermeister, B.; Bellagamba, L.; Benabderrahmane, M. L.; Berger, T.; Brown, A.; Brown, A.; 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. M.; Cussonneau, J. P.; Decowski, M. P.; Depoian, A.; Gangi, P. Di; Giovanni, A. Di; Stefano, R. Di; Diglio, S.; Elykov, A.; Eurin, G.; Ferella, A. D.; Fulgione, W.; Gaemers, P.; Gaïor, R.; Galloway, M.; Gao, F.; Grandi, L.; Hasterok, C.; Hils, C.; Hiraide, K.; Hoetzsch, L.; Howlett, J.; Iacovacci, M.; Itow, Y.; Joerg, F.; Kato, Natsuko; Kazama, S.; Kobayashi, M.; Koltman, G.; Kopec, A.; Landsman, H.; Lang, R. F.; Levinson, L. J.; Lin, Q.; Lindemann, S.; Lindner, M.; Lombardi, F.; Long, J.; Lopes, J. A. M.; Fune, E. López; Macolino, C.; Mahlstedt, J.; Mancuso, A.; Manenti, L.; Manfredini, A.; Marignetti, Fabrizio; Undagoitia, T. Marrodán; Martens, K.; Masbou, J.; Masson, D.; Mastroianni, S.; Messina, M.; Miuchi, K.; Mizukoshi, K.; Molinario, A.; Morå, K.; Moriyama, S.; Mosbacher, Y.; Murra, M.; Naganoma, J.; Ni, K.; Oberlack, U.; Odgers, K.; Palacio, J.; Pelssers, B.; Peres, R.; Pienaar, J.; Pizzella, V.; Plante, G.; Qin, J.; Qiu, Hongbo; García, D. Ramírez; Reichard, S.; Rocchetti, A.; Rupp, N.; Santos, J.M.F. dos; Sartorelli, G.; Šarčević, N.; Scheibelhut, M.; Schreiner, J.; Schulte, D.; Schümann, M.; Lavina, L. Scotto; Selvi, M.; Semeria, F.; Shagin, P.; Shockley, E.; Silva, M.; Simgen, H.; Takeda, A.; Therreau, C.; Thers, D.; Toschi, F.; Trinchero, G.; Tunnell, C.; Vargas, M.; Volta, G.; Wang, H.; Wei, Y.; Weinheimer, C.; Weiss, M.; Wenz, D.; Wittweg, C.; Xu, Z.; Yamashita, M.; J, Ye; Zavattini, G.; Zhang, Y.; Zhu, T.; Zopounidis, J. P.; Mougeot, X.

doi:10.1103/physrevd.102.072004

articlePhysical review. D/Physical review. D.Oct 12, 2020HYBRID OA

Excess electronic recoil events in XENON1T

EAE. Aprile JAJ. Aalbers FAF. Agostini MAM. Alfonsi LAL. Althueser

Columbia University · Stockholm University · +42 more institutions

Indexed inarxivcrossrefdatacite

Abstract

We report results from searches for new physics with low-energy electronic recoil data recorded with the XENON1T detector. With an exposure of 0.65 tonne-years and an unprecedentedly low background rate of 76 AE 2 stat events=tonne year keV between 1 and 30 keV, the data enable one of the most sensitive searches for solar axions, an enhanced neutrino magnetic moment using solar neutrinos, and bosonic dark matter. An excess over known backgrounds is observed at low energies and most prominent between 2 and 3 keV. The solar axion model has a 3.4 significance, and a three-dimensional 90% confidence surface is reported for axion couplings to electrons, photons, and nucleons. This surface is inscribed in the cuboid…

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Keywords

Recoil
Physics
Nuclear physics

UN Sustainable Development Goals

Affordable and clean energy

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