Dark Matter Search Results from a One Tonne\(\times\)Year Exposure of XENON1T

• Published in: arXiv.org 2018-09
• Main Authors: Aprile, E, Aalbers, J, Agostini, F, Alfonsi, M, Amaro, F D, Baudis, L, Bauermeister, B, Benabderrahmane, M L, Berger, T, Breur, P A, Brown, A, Brown, E, Bruenner, S, Bruno, G, Budnik, R, Capelli, C, Cichon, D, Coderre, D, Colijn, A P, Conrad, J, Cussonneau, J P, Decowski, M P, P Di Gangi, A Di Giovanni, Diglio, S, Elykov, A, Eurin, G, Fei, J, Ferella, A D, Fieguth, A, Fulgione, W, A Gallo Rosso, Galloway, M, Gao, F, Garbini, M, Grandi, L, Qiu, H, Hasterok, C, Hogenbirk, E, Howlett, J, Itay, R, Kaminsky, B, Kazama, S, Kish, A, Koltman, G, Landsman, H, Lang, R F, Levinson, L, Lin, Q, Lindemann, S, Lombardi, F, Lopes, J A M, Mahlstedt, J, Manfredini, A, T Marrodán Undagoitia, Masbou, J, Masson, D, Messina, M, Micheneau, K, Miller, K, Molinario, A, Morå, K, Murra, M, Naganoma, J, K Ni, Oberlack, U, Pelssers, B, Piastra, F, Pienaar, J, Pizzella, V, Plante, G, Podviianiuk, R, Priel, N, D Ramírez García, Rauch, L, Reichard, S, Reuter, C, Riedel, B, Rizzo, A, Rocchetti, A, Sartorelli, G, Schindler, S, Schreiner, J, Schulte, D, L Scotto Lavina, Selvi, M, Shagin, P, Shockley, E, Toschi, F, Tunnell, C, Vargas, M, Wack, O, Wang, H, Wang, Z, Weinheimer, C, Wittweg, C, Wulf, J, J Ye, Zhang, Y, Zhu, T
• Format: Article
• Language: English
• Subjects: Confidence intervals; Dark matter; Elastic scattering; Radiation counters; Recoil; Weakly interacting massive particles; Xenon
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1805.12562

We report on a search for Weakly Interacting Massive Particles (WIMPs) using 278.8 days of data collected with the XENON1T experiment at LNGS. XENON1T utilizes a liquid xenon time projection chamber with a fiducial mass of \((1.30 \pm 0.01)\) t, resulting in a 1.0 t\(\times\)yr exposure. The energy region of interest, [1.4, 10.6] \(\mathrm{keV_{ee}}\) ([4.9, 40.9] \(\mathrm{keV_{nr}}\)), exhibits an ultra-low electron recoil background rate of \((82\substack{+5 \\ -3}\textrm{ (sys)}\pm3\textrm{ (stat)})\) events/\((\mathrm{t}\times\mathrm{yr}\times\mathrm{keV_{ee}})\). No significant excess over background is found and a profile likelihood analysis parameterized in spatial and energy dimensions excludes new parameter space for the WIMP-nucleon spin-independent elastic scatter cross-section for WIMP masses above 6 GeV/c\({}^2\), with a minimum of \(4.1\times10^{-47}\) cm\(^2\) at 30 GeV/c\({}^2\) and 90% confidence level.