Low-Mass Dark Matter Search with the DarkSide-50 Experiment

Agnes, P.P.AgnesAlbuquerque, I. F. M.I. F. M.AlbuquerqueAlexander, T.T.AlexanderAlton, A. K.A. K.AltonAraujo, G. R.G. R.AraujoAsner, D. M.D. M.AsnerAve, M.M.AveBack, H. O.H. O.BackBaldin, B.B.BaldinBatignani, G.G.BatignaniBiery, K.K.BieryBocci, V.V.BocciBonfini, G.G.BonfiniBonivento, W.W.BoniventoBottino, B.B.BottinoBudano, F.F.BudanoBussino, S.S.BussinoCadeddu, M.M.CadedduCadoni, M.M.CadoniCalaprice, F.F.CalapriceCaminata, A.A.CaminataCanci, N.N.CanciCandela, A.A.CandelaCaravati, M.M.CaravatiCariello, M.M.CarielloCarlini, M.M.CarliniCarpinelli, M.M.CarpinelliCatalanotti, S.S.CatalanottiCataudella, V.V.CataudellaCavalcante, P.P.CavalcanteCAVUOTI, STEFANOSTEFANOCAVUOTICereseto, R.R.CeresetoChepurnov, A.A.ChepurnovCicalò, C.C.CicalòCifarelli, L.L.CifarelliCocco, A. G.A. G.CoccoCovone, G.G.CovoneD'Angelo, D.D.D'AngeloD'Incecco, M.M.D'InceccoD'Urso, D.D.D'UrsoDavini, S.S.DaviniDe Candia, A.A.De CandiaDe Cecco, S.S.De CeccoDe Deo, M.M.De DeoDe Filippis, G.G.De FilippisDe Rosa, G.G.De RosaDe Vincenzi, M.M.De VincenziDemontis, P.P.DemontisDerbin, A. V.A. V.DerbinDevoto, A.A.DevotoDi Eusanio, F.F.Di EusanioDi Pietro, G.G.Di PietroDionisi, C.C.DionisiDowning, M.M.DowningEdkins, E.E.EdkinsEmpl, A.A.EmplFan, A.A.FanFiorillo, G.G.FiorilloFomenko, K.K.FomenkoFranco, D.D.FrancoGabriele, F.F.GabrieleGabrieli, A.A.GabrieliGalbiati, C.C.GalbiatiGarcia Abia, P.P.Garcia AbiaGhiano, ChiaraChiaraGhianoGiagu, S.S.GiaguGiganti, C.C.GigantiGiovanetti, G. K.G. K.GiovanettiGorchakov, O.O.GorchakovGoretti, A. M.A. M.GorettiGranato, F.F.GranatoGromov, M.M.GromovGuan, M.M.GuanGuardincerri, Y.Y.GuardincerriGulino, M.M.GulinoHackett, B. R.B. R.HackettHassanshahi, M. H.M. H.HassanshahiHerner, K.K.HernerHosseini, B.B.HosseiniHughes, D.D.HughesHumble, P.P.HumbleHungerford, E. V.E. V.HungerfordIanni, Al.Al.IanniIanni, An.An.IanniIppolito, V.V.IppolitoJames, I.I.JamesJohnson, T. N.T. N.JohnsonKahn, Y.Y.KahnKeeter, K.K.KeeterKendziora, C. L.C. L.KendzioraKochanek, I.I.KochanekKoh, G.G.KohKorablev, D.D.KorablevKorga, G.G.KorgaKubankin, A.A.KubankinKuss, M.M.KussLa Commara, M.M.La CommaraLai, M.M.LaiLi, X.X.LiLisanti, M.M.LisantiLissia, M.M.LissiaLoer, B.B.LoerLongo, G.G.LongoMa, Y.Y.MaMachado, A. A.A. A.MachadoMachulin, I. N.I. N.MachulinMandarano, A.A.MandaranoMapelli, L.L.MapelliMari, S. M.S. M.MariMaricic, J.J.MaricicMartoff, C. J.C. J.MartoffMessina, A.A.MessinaMeyers, P. D.P. D.MeyersMilincic, R.R.MilincicMishra-Sharma, S.S.Mishra-SharmaMonte, A.A.MonteMorrocchi, M.M.MorrocchiMount, B. J.B. J.MountMuratova, V. N.V. N.MuratovaMusico, P.P.MusicoNania, R.R.NaniaNavrer Agasson, A.A.Navrer AgassonNozdrina, A. O.A. O.NozdrinaOleinik, A.A.OleinikOrsini, M.M.OrsiniOrtica, F.F.OrticaPagani, L.L.PaganiPallavicini, M.M.PallaviciniPandola, L.L.PandolaPantic, E.E.PanticPaoloni, E.E.PaoloniPazzona, F.F.PazzonaPelczar, K.K.PelczarPelliccia, N.N.PellicciaPesudo, V.V.PesudoPocar, A.A.PocarPordes, S.S.PordesPoudel, S. S.S. S.PoudelPugachev, D. A.D. A.PugachevQian, H.H.QianRagusa, F.F.RagusaRazeti, M.M.RazetiRazeto, A.A.RazetoReinhold, B.B.ReinholdRenshaw, A. L.A. L.RenshawRescigno, M.M.RescignoRiffard, Q.Q.RiffardRomani, A.A.RomaniRossi, B.B.RossiRossi, N.N.RossiSablone, D.D.SabloneSamoylov, O.O.SamoylovSands, W.W.SandsSanfilippo, S.S.SanfilippoSant, M.M.SantSantorelli, R.R.SantorelliSavarese, C.C.SavareseScapparone, E.E.ScapparoneSchlitzer, B.B.SchlitzerSegreto, E.E.SegretoSemenov, D. A.D. A.SemenovShchagin, A.A.ShchaginSheshukov, A.A.SheshukovSingh, P. N.P. N.SinghSkorokhvatov, M. D.M. D.SkorokhvatovSmirnov, O.O.SmirnovSotnikov, A.A.SotnikovStanford, C.C.StanfordStracka, S.S.StrackaSuffritti, G. B.G. B.SuffrittiSuvorov, Y.Y.SuvorovTartaglia, R.R.TartagliaTestera, G.G.TesteraTonazzo, A.A.TonazzoTrinchese, P.P.TrincheseUnzhakov, E. V.E. V.UnzhakovVerducci, M.M.VerducciVishneva, A.A.VishnevaVogelaar, B.B.VogelaarWada, M.M.WadaWaldrop, T. J.T. J.WaldropWang, H.H.WangWang, Y.Y.WangWatson, A. W.A. W.WatsonWesterdale, S.S.WesterdaleWojcik, M. M.M. M.WojcikWojcik, M.M.WojcikXiang, X.X.XiangXiao, X.X.XiaoYang, C.C.YangYe, Z.Z.YeZhu, C.C.ZhuZichichi, A.A.ZichichiZuzel, G.G.ZuzelDarkSide Collaboration2020-09-292020-09-2920180031-9007http://hdl.handle.net/20.500.12386/27508We present the results of a search for dark matter weakly interacting massive particles (WIMPs) in the mass range below 20 GeV /c2 using a target of low-radioactivity argon with a 6786.0 kg d exposure. The data were obtained using the DarkSide-50 apparatus at Laboratori Nazionali del Gran Sasso. The analysis is based on the ionization signal, for which the DarkSide-50 time projection chamber is fully efficient at 0.1 keV ee . The observed rate in the detector at 0.5 keV ee is about 1.5 event /keV ee/kg /d and is almost entirely accounted for by known background sources. We obtain a 90% C.L. exclusion limit above 1.8 GeV /c2 for the spin-independent cross section of dark matter WIMPs on nucleons, extending the exclusion region for dark matter below previous limits in the range 1.8 - 6 GeV /c2 .STAMPAenLow-Mass Dark Matter Search with the DarkSide-50 ExperimentArticle10.1103/PhysRevLett.121.0813072-s2.0-85052200858000442548300001https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.0813072018PhRvL.121h1307AFIS/04 - FISICA NUCLEARE E SUBNUCLEARE