Calibration of the liquid argon ionization response to low energy electronic and nuclear recoils with DarkSide-50
Creators: name: The DarkSide Collaboration
name: Agnes, P.
name: Albuquerque, I. F. M.
name: Alexander, T.
name: Alton, A. K.
name: Ave, M.
name: Back, H. O.
name: Batignani, G.
name: Biery, K.
name: Bocci, V.
name: Bonivento, W. M.
name: Bottino, B.
name: Bussino, S.
name: Cadeddu, M.
name: Cadoni, M.
name: Calaprice, F.
name: Caminata, A.
name: Canci, N.
name: Caravati, M.
name: Cariello, M.
name: Carlini, M.
name: Carpinelli, M.
name: Catalanotti, S.
name: Cataudella, V.
name: Cavalcante, P.
name: Cavuoti, S.
name: Chepurnov, A.
name: Cicalò, C.
name: Cocco, A. G.
name: Covone, G.
name: D'Angelo, D.
name: Davini, S.
name: De Candia, A.
name: De Cecco, S.
name: De Filippis, G.
name: De Rosa, G.
name: Derbin, A. V.
name: Devoto, A.
name: D'Incecco, M.
name: Dionisi, C.
name: Dordei, F.
name: Downing, M.
name: D'Urso, D.
name: Fiorillo, G.
name: Franco, D.
name: Gabriele, F.
name: Galbiati, C.
name: Ghiano, C.
name: Giganti, C.
name: Giovanetti, G. K.
name: Gorchakov, O.
name: Goretti, A. M.
name: Grobov, A.
name: Gromov, M.
name: Guan, M.
name: Guardincerri, Y.
name: Gulino, M.
name: Hackett, B. R.
name: Herner, K.
name: Hosseini, B.
name: Hubaut, F.
name: Hungerford, E. V.
name: Ianni, An.
name: Ippolito, V.
name: Keeter, K.
name: Kendziora, C. L.
name: Kochanek, I.
name: Korablev, D.
name: Korga, G.
name: Kubankin, A.
name: Kuss, M.
name: La Commara, M.
name: Lai, M.
name: Li, X.
name: Lissia, M.
name: Longo, G.
name: Machulin, I. N.
name: Mapelli, L. P.
name: Mari, S. M.
name: Maricic, J.
name: Martoff, C. J.
name: Messina, A.
name: Meyers, P. D.
name: Milincic, R.
name: Morrocchi, M.
name: Mougeot, X.
name: Muratova, V. N.
name: Musico, P.
name: Agasson, A. Navrer
name: Nozdrina, A. O.
name: Oleinik, A.
name: Ortica, F.
name: Pagani, L.
name: Pallavicini, M.
name: Pandola, L.
name: Pantic, E.
name: Paoloni, E.
name: Pelczar, K.
name: Pelliccia, N.
name: Picciau, E.
name: Pocar, A.
name: Pordes, S.
name: Poudel, S. S.
name: Pralavorio, P.
name: Ragusa, F.
name: Razeti, M.
name: Razeto, A.
name: Renshaw, A. L.
name: Rescigno, M.
name: Rode, J.
name: Romani, A.
name: Sablone, D.
name: Samoylov, O.
name: Sands, W.
name: Sanfilippo, S.
name: Savarese, C.
name: Schlitzer, B.
name: Semenov, D. A.
name: Shchagin, A.
name: Sheshukov, A.
name: Skorokhvatov, M. D.
name: Smirnov, O.
name: Sotnikov, A.
name: Stracka, S.
name: Suvorov, Y.
name: Tartaglia, R.
name: Testera, G.
name: Tonazzo, A.
name: Unzhakov, E. V.
name: Vishneva, A.
name: Vogelaar, R. B.
name: Wada, M.
name: Wang, H.
name: Wang, Y.
name: Westerdale, S.
name: Wojcik, M. M.
name: Xiao, X.
name: Yang, C.
name: Zuzel, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: DarkSide-50 has demonstrated the high potential of dual-phase liquid argon time projection chambers in exploring interactions of WIMPs in the GeV/c$^2$ mass range. The technique, based on the detection of the ionization signal amplified via electroluminescence in the gas phase, allows to explore recoil energies down to the sub-keV range. We report here on the DarkSide-50 measurement of the ionization yield of electronic recoils down to $\sim$180~eV$_{er}$, exploiting $^{37}$Ar and $^{39}$Ar decays, and extrapolated to a few ionization electrons with the Thomas-Imel box model. Moreover, we present a model-dependent determination of the ionization response to nuclear recoils down to $\sim$500~eV$_{nr}$, the lowest ever achieved in liquid argon, using \textit{in situ} neutron calibration sources and external datasets from neutron beam experiments.
description: 11 pages, 12 figures, 1 table