First Dark Matter Search Results from the XENON1T Experiment

E. Aprile , J. Aalbers , F. Agostini , M. Alfonsi , F.D. Amaro , M. Anthony , F. Arneodo , P. Barrow , L. Baudis , B. Bauermeister , M.L. Benabderrahmane , T. Berger , P.A. Breur , Andrew G. Brown , Adam Brown , E. Brown , S. Bruenner , G. Bruno , R. Budnik , L. Bütikofer , J. Calvén , J.M.R. Cardoso , M. Cervantes , D. Cichon , D. Coderre , A.P. Colijn , J. Conrad , Jean-Pierre Cussonneau (1) , M.P. Decowski , P. de Perio , P. Di Gangi , A. Di Giovanni , Sara Diglio (1) , G. Eurin , J. Fei , A.D. Ferella , A. Fieguth , W. Fulgione , A. Gallo Rosso , M. Galloway , F. Gao , M. Garbini , R. Gardner , C. Geis , L.W. Goetzke , L. Grandi , Z. Greene , C. Grignon , C. Hasterok , E. Hogenbirk , J. Howlett , R. Itay , B. Kaminsky , S. Kazama , G. Kessler , A. Kish , H. Landsman , R.F. Lang , D. Lellouch , L. Levinson , Q. Lin , S. Lindemann , M. Lindner , F. Lombardi , J.A.M. Lopes , A. Manfredini , I. Mariş , T. Marrodán Undagoitia , Julien Masbou (1) , F.V. Massoli , D. Masson , D. Mayani , M. Messina , K. Micheneau (1) , A. Molinario , K. Morå , M. Murra , J. Naganoma , K. Ni , U. Oberlack , P. Pakarha , B. Pelssers , R. Persiani (1) , F. Piastra , J. Pienaar , V. Pizzella , M.-C. Piro , G. Plante , N. Priel , L. Rauch , S. Reichard , C. Reuter , B. Riedel , A. Rizzo , S. Rosendahl , N. Rupp , R. Saldanha , J.M.F. dos Santos , G. Sartorelli , M. Scheibelhut , S. Schindler , J. Schreiner , M. Schumann , L. Scotto Lavina (2) , M. Selvi , P. Shagin , E. Shockley , M. Silva , H. Simgen , M.V. Sivers , A. Stein , S. Thapa , Dominique Thers (1) , A. Tiseni , G. Trinchero , C. Tunnell , M. Vargas , N. Upole , H. Wang , Z. Wang , Y. Wei , C. Weinheimer , J. Wulf , J. Ye , Y. Zhang , T. Zhu

1 SUBATECH - Laboratoire de physique subatomique et des technologies associées
2 LPNHE (UMR_7585) - Laboratoire de Physique Nucléaire et de Hautes Énergies

We report the first dark matter search results from XENON1T, a ∼2000-kg-target-mass dual-phase (liquid-gas) xenon time projection chamber in operation at the Laboratori Nazionali del Gran Sasso in Italy and the first ton-scale detector of this kind. The blinded search used 34.2 live days of data acquired between November 2016 and January 2017. Inside the (1042±12)-kg fiducial mass and in the [5,40]  keVnr energy range of interest for weakly interacting massive particle (WIMP) dark matter searches, the electronic recoil background was (1.93±0.25)×10-4  events/(kg×day×keVee), the lowest ever achieved in such a dark matter detector. A profile likelihood analysis shows that the data are consistent with the background-only hypothesis. We derive the most stringent exclusion limits on the spin-independent WIMP-nucleon interaction cross section for WIMP masses above 10  GeV/c2, with a minimum of 7.7×10-47  cm2 for 35-GeV/c2 WIMPs at 90% C.L.

Mots clés: dark matter: detector; WIMP: dark matter; WIMP: mass; time projection chamber: xenon; WIMP nucleon: interaction; background; Gran Sasso; dark matter: scattering; recoil; interpretation of experiments: XENON; S030DI2

Domaines: Astrophysique [astro-ph]; Instrumentations et Détecteurs [physics.ins-det]; Physique des Hautes Energies - Expérience [hep-ex]

E. Aprile, J. Aalbers, F. Agostini, M. Alfonsi, F.D. Amaro, et al.. First Dark Matter Search Results from the XENON1T Experiment. Physical Review Letters, 2017, 119 (18), pp.181301. ⟨10.1103/PhysRevLett.119.181301⟩. ⟨hal-01645710⟩