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. 2018 Sep 14;121(11):111303.
doi: 10.1103/PhysRevLett.121.111303.

Constraints on Sub-GeV Dark-Matter-Electron Scattering from the DarkSide-50 Experiment

P Agnes  1 I F M Albuquerque  2 T Alexander  3 A K Alton  4 G R Araujo  2 D M Asner  5 M Ave  2 H O Back  3 B Baldin  6 G Batignani  7   8 K Biery  6 V Bocci  9 G Bonfini  10 W Bonivento  11 B Bottino  12   13 F Budano  14   15 S Bussino  14   15 M Cadeddu  11   16 M Cadoni  11   16 F Calaprice  17 A Caminata  13 N Canci  1   10 A Candela  10 M Caravati  11   16 M Cariello  13 M Carlini  10 M Carpinelli  18   19 S Catalanotti  20   21 V Cataudella  20   21 P Cavalcante  10   22 S Cavuoti  20   21 R Cereseto  13 A Chepurnov  23 C Cicalò  11 L Cifarelli  24   25 A G Cocco  21 G Covone  20   21 D D'Angelo  26   27 M D'Incecco  10 D D'Urso  18   19 S Davini  13 A De Candia  20   21 S De Cecco  9   28 M De Deo  10 G De Filippis  20   21 G De Rosa  20   21 M De Vincenzi  14   15 P Demontis  18   19   29 A V Derbin  30 A Devoto  11   16 F Di Eusanio  17 G Di Pietro  10   27 C Dionisi  9   28 M Downing  31 E Edkins  32 A Empl  1 A Fan  33 G Fiorillo  20   21 K Fomenko  34 D Franco  35 F Gabriele  10 A Gabrieli  18   19 C Galbiati  17   36 P Garcia Abia  37 C Ghiano  10 S Giagu  9   28 C Giganti  38 G K Giovanetti  17 O Gorchakov  34 A M Goretti  10 F Granato  39 M Gromov  23 M Guan  40 Y Guardincerri  6 M Gulino  19   41 B R Hackett  32 M H Hassanshahi  10 K Herner  6 B Hosseini  11 D Hughes  17 P Humble  3 E V Hungerford  1 Al Ianni  10 An Ianni  10   17 V Ippolito  9 I James  14   15 T N Johnson  42 Y Kahn  17 K Keeter  43 C L Kendziora  6 I Kochanek  10 G Koh  17 D Korablev  34 G Korga  1   10 A Kubankin  44 M Kuss  7 M La Commara  20   21 M Lai  11   16 X Li  17 M Lisanti  17 M Lissia  11 B Loer  3 G Longo  20   21 Y Ma  40 A A Machado  45 I N Machulin  46   47 A Mandarano  10   36 L Mapelli  17 S M Mari  14   15 J Maricic  32 C J Martoff  39 A Messina  9   28 P D Meyers  17 R Milincic  32 S Mishra-Sharma  17 A Monte  31 M Morrocchi  7 B J Mount  43 V N Muratova  30 P Musico  13 R Nania  25 A Navrer Agasson  38 A O Nozdrina  46   47 A Oleinik  44 M Orsini  10 F Ortica  48   49 L Pagani  42 M Pallavicini  12   13 L Pandola  19 E Pantic  42 E Paoloni  7   8 F Pazzona  18   19 K Pelczar  10 N Pelliccia  48   49 V Pesudo  37 E Picciau  11   16 A Pocar  31 S Pordes  6 S S Poudel  1 D A Pugachev  46 H Qian  17 F Ragusa  26   27 M Razeti  11 A Razeto  10 B Reinhold  32 A L Renshaw  1 M Rescigno  9 Q Riffard  35 A Romani  48   49 B Rossi  21 N Rossi  9 D Sablone  10   17 O Samoylov  34 W Sands  17 S Sanfilippo  14   15 M Sant  18   19 R Santorelli  37 C Savarese  10   36 E Scapparone  25 B Schlitzer  42 E Segreto  45 D A Semenov  30 A Shchagin  44 A Sheshukov  34 P N Singh  1 M D Skorokhvatov  46   47 O Smirnov  34 A Sotnikov  34 C Stanford  17 S Stracka  7 G B Suffritti  18   19   29 Y Suvorov  20   21   33   46 R Tartaglia  10 G Testera  13 A Tonazzo  35 P Trinchese  20   21 E V Unzhakov  30 M Verducci  9   28 A Vishneva  34 B Vogelaar  22 M Wada  17 T J Waldrop  4 H Wang  33 Y Wang  33 A W Watson  39 S Westerdale  17 M M Wojcik  50 M Wojcik  51 X Xiang  17 X Xiao  33 C Yang  40 Z Ye  1 C Zhu  17 A Zichichi  24   25 G Zuzel  50 DarkSide Collaboration
Affiliations
Free article

Constraints on Sub-GeV Dark-Matter-Electron Scattering from the DarkSide-50 Experiment

P Agnes et al. Phys Rev Lett. .
Free article

Abstract

We present new constraints on sub-GeV dark-matter particles scattering off electrons based on 6780.0 kg d of data collected with the DarkSide-50 dual-phase argon time projection chamber. This analysis uses electroluminescence signals due to ionized electrons extracted from the liquid argon target. The detector has a very high trigger probability for these signals, allowing for an analysis threshold of three extracted electrons, or approximately 0.05 keVee. We calculate the expected recoil spectra for dark matter-electron scattering in argon and, under the assumption of momentum-independent scattering, improve upon existing limits from XENON10 for dark-matter particles with masses between 30 and 100 MeV/c^{2}.

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