Results from the first use of low radioactivity argon in a dark matter search
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Results from the first use of low radioactivity argon in a dark matter search

Paolo Agnes,L. Agostino,I. F. M. Albuquerque,T. Alexander,A. K. Alton,K. Arisaka,H. O. Back,B. Baldin,K. Biery,G. Bonfini,M. Bossa,B. Bottino,A. Brigatti,Jason Brodsky,F. Budano,S. Bussino,M. Cadeddu,L. Cadonati,Mariano Cadoni,F. Calaprice,Nicola Canci,A. Candela,H. Cao,M. Cariello,M. Carlini,Sergio Catalanotti,P. Cavalcante,A. Chepurnov,Alfredo Giuseppe Cocco,G. Covone,L. Crippa,Davide D'Angelo,M. D’Incecco,S. Davini,S. De Cecco,M. De Deo,M. De Vincenzi,Alexander Derbin,Alberto Devoto,F. Di Eusanio,G. Di Pietro,E. Edkins,A. Empl,A. Fan,Giuliana Fiorillo,K. Fomenko,G. Forster,Davide Franco,Federico Gabriele,Cristiano Galbiati,C. Giganti,A. M. Goretti,F. Granato,Luca Grandi,M. Gromov,M. Guan,Y. Guardincerri,B. R. Hackett,K. Herner,E. V. Hungerford,Al. Ianni,An. Ianni,I. James,C. Jollet,K. Keeter,C. L. Kendziora,Vladislav Kobychev,G. Koh,D. Korablev,G. Korga,A. Kubankin,X. Li,Marcello Lissia,P. Lombardi,S. Luitz,Y. Ma,I. N. Machulin,A. Mandarano,S. M. Mari,J. Maricic,Laura Marini,C. J. Martoff,Anselmo Meregaglia,P. D. Meyers,T. Miletic,R. Milincic,D. Montanari,A. Monte,Michele Montuschi,M. Monzani,P. Mosteiro,B. J. Mount,V. N. Muratova,P. Musico,J. Napolitano,A. Nelson,S. Odrowski,M. Orsini,Fausto Ortica,L. Pagani,Marco Pallavicini,E. Pantic,S. Parmeggiano,K. Pelczar,N. Pelliccia,S. Perasso,A. Pocar,S. Pordes,D. A. Pugachev,H. Qian,K. Randle,Gioacchino Ranucci,A. Razeto,B. Reinhold,A. L. Renshaw,Aldo Romani,Biagio Rossi,Nicola Rossi,D. Rountree,D. Sablone,P. Saggese,Richard Saldanha,W. Sands,Samuele Sangiorgio,C. Savarese,E. Segreto,D. A. Semenov,E. Shields,P. N. Singh,M. D. Skorokhvatov,Oleg Smirnov,A. Sotnikov,C. Stanford,Y. Suvorov,R. Tartaglia,J. Tatarowicz,G. Testera,A. Tonazzo,P. Trinchese,Evgeniy Unzhakov,Alina Vishneva,B. Vogelaar,M. Wada,S. Walker,H. Wang,Y. Wang,A. W. Watson,Shawn Westerdale,James Wilhelmi,M. M. Wojcik,X. Xiang,Jingke Xu,C. Yang,J. Yoo,S. Zavatarelli,A. Zec,W. Zhong,C. Zhu,G. Zuzel,DarkSide Collaboration;Paolo Agnes;L. Agostino;I. F. M. Albuquerque;T. Alexander;A. K. Alton;K. Arisaka;H. O. Back;B. Baldin;K. Biery;G. Bonfini;M. Bossa;B. Bottino;A. Brigatti;Jason Brodsky;F. Budano;S. Bussino;M. Cadeddu;L. Cadonati;Mariano Cadoni;F. Calaprice;Nicola Canci;A. Candela;H. Cao;M. Cariello;M. Carlini;Sergio Catalanotti;P. Cavalcante;A. Chepurnov;Alfredo Giuseppe Cocco;G. Covone;L. Crippa;Davide D'Angelo;M. D’Incecco;S. Davini;S. De Cecco;M. De Deo;M. De Vincenzi;Alexander Derbin;Alberto Devoto;F. Di Eusanio;G. Di Pietro;E. Edkins;A. Empl;A. Fan;Giuliana Fiorillo;K. Fomenko;G. Forster;Davide Franco;Federico Gabriele;Cristiano Galbiati;C. Giganti;A. M. Goretti;F. Granato;Luca Grandi;M. Gromov;M. Guan;Y. Guardincerri;B. R. Hackett;K. Herner;E. V. Hungerford;Al. Ianni;An. Ianni;I. James;C. Jollet;K. Keeter;C. L. Kendziora;Vladislav Kobychev;G. Koh;D. Korablev;G. Korga;A. Kubankin;X. Li;Marcello Lissia;P. Lombardi;S. Luitz;Y. Ma;I. N. Machulin;A. Mandarano;S. M. Mari;J. Maricic;Laura Marini;C. J. Martoff;Anselmo Meregaglia;P. D. Meyers;T. Miletic;R. Milincic;D. Montanari;A. Monte;Michele Montuschi;M. Monzani;P. Mosteiro;B. J. Mount;V. N. Muratova;P. Musico;J. Napolitano;A. Nelson;S. Odrowski;M. Orsini;Fausto Ortica;L. Pagani;Marco Pallavicini;E. Pantic;S. Parmeggiano;K. Pelczar;N. Pelliccia;S. Perasso;A. Pocar;S. Pordes;D. A. Pugachev;H. Qian;K. Randle;Gioacchino Ranucci;A. Razeto;B. Reinhold;A. L. Renshaw;Aldo Romani;Biagio Rossi;Nicola Rossi;D. Rountree;D. Sablone;P. Saggese;Richard Saldanha;W. Sands;Samuele Sangiorgio;C. Savarese;E. Segreto;D. A. Semenov;E. Shields;P. N. Singh;M. D. Skorokhvatov;Oleg Smirnov;A. Sotnikov;C. Stanford;Y. Suvorov;R. Tartaglia;J. Tatarowicz;G. Testera;A. Tonazzo;P. Trinchese;Evgeniy Unzhakov;Alina Vishneva;B. Vogelaar;M. Wada;S. Walker;H. Wang;Y. Wang;A. W. Watson;Shawn Westerdale;James Wilhelmi;M. M. Wojcik;X. Xiang;Jingke Xu;C. Yang;J. Yoo;S. Zavatarelli;A. Zec;W. Zhong;C. Zhu;G. Zuzel;DarkSide Collaboration;
physical review d 2016 Vol. 93 pp. 081101-
170
collaboration2016physicalresults

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 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, 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 2.0×10−44 cm2 (8.6×10−44 cm2, 8.0×10−43 cm2) for a WIMP mass of 100 GeV/c2 (1 TeV/c2, 10 TeV/c2).

Keywords

radioactivity search dark matter argon wimp cm2 darkside tev/c2

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DOI:
10.1103/physrevd.93.081101
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https://sciprofiles.com/publication/view/70f6aad66...

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