Results from the first use of low radioactivity argon in a dark matter search
Author(s): Agnes, P; Agostino, L; Albuquerque, IFM; Alexander, T; Alton, AK; et al
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http://arks.princeton.edu/ark:/88435/pr1dd27| Abstract: | Liquid 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 Ar-39 at a level reduced by a factor (1.4 +/- 0.2) x 10(3) 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, the 90% C.L. upper limit on the WIMP-nucleon spin-independent cross section, based on zero events found in the WIMP search regions, is 2.0 x 10(-4)4 cm(2) (8.6 x 10(-44) cm(2), 8.0 x 10(-43) cm(2)) for a WIMP mass of 100 GeV/c(2) (1 TeV/c(2), 10 TeV/c(2)). |
| Publication Date: | 8-Apr-2016 |
| Electronic Publication Date: | 8-Apr-2016 |
| Citation: | Agnes, P, Agostino, L, Albuquerque, IFM, Alexander, T, Alton, AK, Arisaka, K, Back, HO, 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, AG, 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, AM, Granato, F, Grandi, L, Gromov, M, Guan, M, Guardincerri, Y, Hackett, BR, Herner, K, Hungerford, EV, Ianni, Al, Ianni, An, James, I, Jollet, C, Keeter, K, Kendziora, CL, Kobychev, V, Koh, G, Korablev, D, Korga, G, Kubankin, A, Li, X, Lissia, M, Lombardi, P, Luitz, S, Ma, Y, Machulin, IN, Mandarano, A, Mari, SM, Maricic, J, Marini, L, Martoff, CJ, Meregaglia, A, Meyers, PD, Miletic, T, Milincic, R, Montanari, D, Monte, A, Montuschi, M, Monzani, M, Mosteiro, P, Mount, BJ, Muratova, VN, 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, DA, Qian, H, Randle, K, Ranucci, G, Razeto, A, Reinhold, B, Renshaw, AL, Romani, A, Rossi, B, Rossi, N, Rountree, D, Sablone, D, Saggese, P, Saldanha, R, Sands, W, Sangiorgio, S, Savarese, C, Segreto, E, Semenov, DA, Shields, E, Singh, PN, Skorokhvatov, MD, Smirnov, O, Sotnikov, A, Stanford, C, Suvorov, Y, Tartaglia, R, Tatarowicz, J, Testera, G, Tonazzo, A, Trinchese, P, Unzhakov, EV, Vishneva, A, Vogelaar, B, Wada, M, Walker, S, Wang, H, Wang, Y, Watson, AW, Westerdale, S, Wilhelmi, J, Wojcik, MM, Xiang, X, Xu, J, Yang, C, Yoo, J, Zavatarelli, S, Zec, A, Zhong, W, Zhu, C, Zuzel, G, Collaboration, DarkSide. (2016). Results from the first use of low radioactivity argon in a dark matter search. PHYSICAL REVIEW D, 93 (10.1103/PhysRevD.93.081101 |
| DOI: | doi:10.1103/PhysRevD.93.081101 |
| ISSN: | 2470-0010 |
| EISSN: | 2470-0029 |
| Pages: | 081101-1 - 081101-7 |
| Type of Material: | Journal Article |
| Journal/Proceeding Title: | PHYSICAL REVIEW D |
| Version: | Author's manuscript |
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