Aprile, E.E.AprileAalbers, J.J.AalbersAgostini, F.F.AgostiniAlfonsi, M.M.AlfonsiAlthueser, L.L.AlthueserAmaro, F. D.F. D.AmaroAnthony, M.M.AnthonyArneodo, F.F.ArneodoBaudis, L.L.BaudisBauermeister, B.B.BauermeisterBenabderrahmane, M. L.M. L.BenabderrahmaneBerger, T.T.BergerBreur, P. A.P. A.BreurBrown, A.A.BrownBrown, E.E.BrownBruenner, S.S.BruennerBruno, G.G.BrunoBudnik, R.R.BudnikCapelli, C.C.CapelliCardoso, J. M. R.J. M. R.CardosoCichon, D.D.CichonCoderre, D.D.CoderreColijn, A. P.A. P.ColijnConrad, J.J.ConradCussonneau, J. P.J. P.CussonneauDecowski, M. P.M. P.Decowskide Perio, P.P.de Periodi Gangi, P.P.di Gangidi Giovanni, A.A.di GiovanniDiglio, S.S.DiglioElykov, A.A.ElykovEurin, G.G.EurinFei, J.J.FeiFerella, A. D.A. D.FerellaFieguth, A.A.FieguthFulgione, W.W.FulgioneGallo Rosso, A.A.Gallo RossoGalloway, M.M.GallowayGao, F.F.GaoGarbini, M.M.GarbiniGeis, C.C.GeisGrandi, L.L.GrandiGreene, Z.Z.GreeneQiu, H.H.QiuHasterok, C.C.HasterokHogenbirk, E.E.HogenbirkHowlett, J.J.HowlettItay, R.R.ItayJoerg, F.F.JoergKaminsky, B.B.KaminskyKazama, S.S.KazamaKish, A.A.KishKoltman, G.G.KoltmanLandsman, H.H.LandsmanLang, R. F.R. F.LangLevinson, L.L.LevinsonLin, Q.Q.LinLindemann, S.S.LindemannLindner, M.M.LindnerLombardi, F.F.LombardiLopes, J. A. M.J. A. M.LopesMahlstedt, J.J.MahlstedtManfredini, A.A.ManfrediniMarrodán Undagoitia, T.T.Marrodán UndagoitiaMasbou, J.J.MasbouMasson, D.D.MassonMessina, M.M.MessinaMicheneau, K.K.MicheneauMiller, K.K.MillerMolinario, A.A.MolinarioMorâ, K.K.MorâMurra, M.M.MurraNaganoma, J.J.NaganomaNi, K.K.NiOberlack, U.U.OberlackPelssers, B.B.PelssersPiastra, F.F.PiastraPienaar, J.J.PienaarPizzella, V.V.PizzellaPlante, G.G.PlantePodviianiuk, R.R.PodviianiukPriel, N.N.PrielRamírez García, D.D.Ramírez GarcíaRauch, L.L.RauchReichard, S.S.ReichardReuter, C.C.ReuterRiedel, B.B.RiedelRizzo, A.A.RizzoRocchetti, A.A.RocchettiRupp, N.N.RuppDos Santos, J. M. F.J. M. F.Dos SantosSartorelli, G.G.SartorelliScheibelhut, M.M.ScheibelhutSchindler, S.S.SchindlerSchreiner, J.J.SchreinerSchulte, D.D.SchulteSchumann, M.M.SchumannScotto Lavina, L.L.Scotto LavinaSelvi, M.M.SelviShagin, P.P.ShaginShockley, E.E.ShockleySilva, M.M.SilvaSimgen, H.H.SimgenThers, D.D.ThersToschi, F.F.ToschiTRINCHERO, GIAN CARLOGIAN CARLOTRINCHEROTunnell, C.C.TunnellUpole, N.N.UpoleVargas, M.M.VargasWack, O.O.WackWang, H.H.WangWang, Z.Z.WangWei, Y.Y.WeiWeinheimer, C.C.WeinheimerWittweg, C.C.WittwegWulf, J.J.WulfYe, J.J.YeZhang, Y.Y.ZhangZhu, T.T.ZhuXenon Collaboration2021-02-052021-02-0520180031-9007http://hdl.handle.net/20.500.12386/30213We 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 ±0.01 ) t o n , resulting in a 1.0 ton yr exposure. The energy region of interest, [1.4 ,10.6 ] keV<SUB>ee</SUB> ([4.9 ,40.9 ] keV<SUB>nr</SUB> ), exhibits an ultralow electron recoil background rate of [82<SUB>-3</SUB><SUP>+5</SUP>(syst ) ±3 (stat ) ] events /(t o n yr keV<SUB>ee</SUB>) . No significant excess over background is found, and a profile likelihood analysis parametrized 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<SUP>2</SUP>, with a minimum of 4.1 ×10<SUP>-47</SUP> cm<SUP>2</SUP> at 30 GeV /c<SUP>2</SUP> and a 90% confidence level.STAMPAenArticle10.1103/PhysRevLett.121.1113022-s2.0-85053320052000444588900003https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.1113022018PhRvL.121k1302AFIS/01 - FISICA SPERIMENTALE