Results From the First Use of Low Radioactivity Argon in a Dark Matter Search
- Agnes, P.
- Agostino, L.
- Albuquerque, I.F.M.
- Alexander, T.
- Alton, A.K.
- Arisaka, K.
- Back, H.O.
- Baldin, B.
- Biery, K.
- Bonfini, G.
- Bossa, M.
- Bottino, B.
- Brigatti, A.
- Brodsky, J.
- Budano, F.
- Bussino, S.
- Cadeddu, M.
- Cadonati, L.
- Cadoni, M.
- Calaprice, F.
- Canci, N.
- Candela, A.
- Cao, H.
- Cariello, M.
- Carlini, M.
- Catalanotti, S.
- Cavalcante, P.
- Chepurnov, A.
- Cocco, A.G.
- Covone, G.
- Crippa, L.
- d'Angelo, D.
- d'Incecco, M.
- Davini, S.
- de Cecco, S.
- de Deo, M.
- de Vincenzi, M.
- Derbin, A.
- Devoto, A.
- Di Eusanio, F.
- Di Pietro, G.
- Edkins, E.
- Empl, A.
- Fan, A.
- Fiorillo, G.
- Fomenko, K.
- Forster, G.
- Franco, D.
- Gabriele, F.
- Galbiati, C.
- Giganti, C.
- Goretti, A.M.
- Granato, F.
- Grandi, L.
- Gromov, M.
- Guan, M.
- Guardincerri, Y.
- Hackett, B.R.
- Herner, K.
- Hungerford, E.V.
- Ianni, Al.
- Ianni, An.
- James, I.
- Jollet, C.
- Keeter, K.
- Kendziora, C.L.
- Kobychev, V.
- Koh, G.
- Korablev, D.
- Korga, G.
- Kubankin, A.
- Li, X.
- Lissia, M.
- Lombardi, P.
- Luitz, S.
- Ma, Y.
- Machulin, I.N.
- Mandarano, A.
- Mari, S.M.
- Maricic, J.
- Marini, L.
- Martoff, C.J.
- Meregaglia, A.
- Meyers, P.D.
- Miletic, T.
- Milincic, R.
- Montanari, D.
- Monte, A.
- Montuschi, M.
- Monzani, M.
- Mosteiro, P.
- Mount, B.J.
- Muratova, V.N.
- Musico, P.
- Napolitano, J.
- Nelson, A.
- Odrowski, S.
- Orsini, M.
- Ortica, F.
- Pagani, L.
- Pallavicini, M.
- Pantic, E.
- Parmeggiano, S.
- Pelczar, K.
- Pelliccia, N.
- Perasso, S.
- Pocar, A.
- Pordes, S.
- Pugachev, D.A.
- Qian, H.
- Randle, K.
- Ranucci, G.
- Razeto, A.
- Reinhold, B.
- Renshaw, A.L.
- Romani, A.
- Rossi, B.
- Rossi, N.
- Rountree, D.
- Sablone, D.
- Saggese, P.
- Saldanha, R.
- Sands, W.
- Sangiorgio, S.
- Savarese, C.
- Segreto, E.
- Semenov, D.A.
- Shields, E.
- Singh, P.N.
- Skorokhvatov, M.D.
- Smirnov, O.
- Sotnikov, A.
- Stanford, C.
- Suvorov, Y.
- Tartaglia, R.
- Tatarowicz, J.
- Testera, G.
- Tonazzo, A.
- Trinchese, P.
- Unzhakov, E.V.
- Vishneva, A.
- Vogelaar, B.
- Wada, M.
- Walker, S.
- Wang, H.
- Wang, Y.
- Watson, A.W.
- Westerdale, S.
- Wilhelmi, J.
- Wojcik, M.M.
- Xiang, X.
- Xu, J.
- Yang, C.
- Yoo, J.
- Zavatarelli, S.
- Zec, A.
- Zhong, W.
- Zhu, C.
- Zuzel, G.
DOIAbstract
International audienceLiquid argon is a bright scintillator with potent particle identification properties, making it an attractive target for direct-detection dark matter searches. The DarkSide-50 dark matter search here reports the first WIMP search results obtained using a target of low-radioactivity argon. DarkSide-50 is a dark matter detector, using a two-phase liquid argon time projection chamber, located at the Laboratori Nazionali del Gran Sasso. The underground argon is shown to contain Ar39 at a level reduced by a factor (1.4±0.2)×103 relative to atmospheric argon. We report a background-free null result from (2616±43) kg d of data, accumulated over 70.9 live days. When combined with our previous search using an atmospheric argon...
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