Current status of the dark matter experiment DarkSide-50

被引:7
|
作者
Marini, L. [10 ,11 ]
Pagani, L. [10 ,11 ]
Agnes, P. [1 ]
Alexander, T. [39 ]
Alton, A. [2 ]
Arisaka, K. [38 ]
Back, H. O. [31 ]
Baldin, B. [9 ]
Biery, K. [9 ]
Bonfini, G. [20 ]
Bossa, M. [12 ]
Brigatti, A. [22 ,23 ]
Brodsky, J. [31 ]
Budano, F. [32 ,33 ]
Cadonati, L. [39 ]
Calaprice, F. [31 ]
Canci, N. [38 ]
Candela, A. [20 ]
Cao, H. [31 ]
Cariello, M. [10 ,11 ]
Cavalcante, P. [20 ]
Chavarria, A. [5 ,6 ]
Chepurnov, A. [24 ]
Cocco, A. G. [25 ,26 ]
D'Angelo, D. [22 ,23 ]
D'Incecco, M. [20 ]
Davini, S. [14 ]
De Deo, M. [20 ]
Derbin, A. [28 ]
Devoto, A. [3 ,4 ]
Di Eusanio, F. [31 ]
Di Pietro, G. [22 ,23 ]
Edkins, E. [13 ]
Empl, A. [14 ]
Fan, A. [38 ]
Fiorillo, G. [25 ,26 ]
Fomenko, K. [8 ]
Forster, G. [39 ]
Franco, D. [1 ]
Gabriele, F. [20 ]
Galbiati, C. [31 ]
Goretti, A. [31 ]
Grandi, L. [5 ,6 ]
Gromov, M. [24 ]
Guan, M. Y. [15 ]
Guardincerri, Y. [9 ]
Hackett, B. [13 ]
Herner, K. [9 ]
Humble, P. [27 ]
Hungerford, E. V. [14 ]
机构
[1] Univ Paris Diderot, APC, Sorbonne Paris Cite, F-75205 Paris, France
[2] Augustana Coll, Dept Phys & Astron, Sioux Falls, SD 57197 USA
[3] Univ Cagliari, Dept Phys, I-09042 Cagliari, Italy
[4] Ist Nazl Fis Nucl, I-09042 Cagliari, Italy
[5] Univ Chicago, Enrico Fermi Inst, Kavli Inst, Chicago, IL 60637 USA
[6] Univ Chicago, Dept Phys, Chicago, IL 60637 USA
[7] Black Hills State Univ, Sch Nat Sci, Spearfish, SD 57799 USA
[8] Joint Inst Nucl Res, Dubna 141980, Russia
[9] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[10] Univ Genoa, Dept Phys, I-16146 Genoa, Italy
[11] Ist Nazl Fis Nucl, I-16146 Genoa, Italy
[12] Gran Sasso Sci Inst, I-67100 Laquila, Italy
[13] Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA
[14] Univ Houston, Dept Phys, Houston, TX 77204 USA
[15] Inst High Energy Phys, Beijing 100049, Peoples R China
[16] Jagiellonian Univ, Smoluchowski Inst Phys, PL-30059 Krakow, Poland
[17] Natl Acad Sci Ukraine, Inst Nucl Res, UA-03680 Kiev, Ukraine
[18] Natl Res Ctr Kurchatov Inst, Moscow 123182, Russia
[19] Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA
[20] Lab Nazl Gran Sasso, I-67010 Assergi, AQ, Italy
[21] Natl Res Nucl Univ, Moscow Engn Phys Inst, Moscow 115409, Russia
[22] Univ Milan, Dept Phys, I-20133 Milan, Italy
[23] Ist Nazl Fis Nucl, I-20133 Milan, Italy
[24] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia
[25] Univ Naples Federico II, Dept Phys, I-80126 Naples, Italy
[26] Ist Nazl Fis Nucl, I-80126 Naples, Italy
[27] Pacific Northwest Natl Lab, Richland, WA 99352 USA
[28] St Petersburg Nucl Phys Inst, Gatchina 188350, Russia
[29] Univ Perugia, Chem Biol & Biotechnol Dept, I-06123 Perugia, Italy
[30] Ist Nazl Fis Nucl, I-06123 Perugia, Italy
[31] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA
[32] Univ Tre Roma, Dept Phys, I-00146 Rome, Italy
[33] Ist Nazl Fis Nucl, I-00146 Rome, Italy
[34] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA
[35] Univ Strasbourg, IPHC, CNRS, IN2P3, F-67037 Strasbourg, France
[36] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA
[37] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA
[38] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[39] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA
[40] Virginia Tech, Dept Phys, Blacksburg, VA 24061 USA
关键词
D O I
10.1393/ncc/i2016-16247-4
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
DarkSide-50 is a dark matter direct search experiment at LNGS, searching for rare nuclear recoils possibly induced by WIMPs. It has two nested vetoes and a dual phase liquid argon TPC as dark matter detector. Key features of this experiment are the use of underground argon as radio-pure target and of muon and neutron active vetoes to suppress the background. The first data-taking campaign was running from November 2013 to April 2015 with an atmospheric argon target and a reduced efficiency neutron veto due to internal contamination. However, an upper limit on the WIMP-nucleon cross section of 6.1x10(-44) cm(2) at 90% CL was obtained for a WIMP mass of 100 GeV/c(2) and an exposure of (1422 +/- 67) kg.d. At present DarkSide-50 started a 3 years run, intended to be background-free because the neutron veto was successfully recovered and underground argon replaced the atmospheric one. Additionally calibration campaigns for both the TPC and the neutron veto were completed. Thanks to the good performance of the background rejection, the results obtained so far suggest the scalability of DarkSide-50 to a ton-scale detector, which will play a key role into the dark matter search scenario.
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页数:5
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