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/c2.
| Original language | English (US) |
|---|---|
| Article number | 111303 |
| Journal | Physical review letters |
| Volume | 121 |
| Issue number | 11 |
| DOIs | |
| State | Published - Sep 12 2018 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
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Constraints on Sub-GeV Dark-Matter-Electron Scattering from the DarkSide-50 Experiment. / The DarkSide Collaboration.
In: Physical review letters, Vol. 121, No. 11, 111303, 12.09.2018.Research output: Contribution to journal › Article
TY - JOUR
T1 - Constraints on Sub-GeV Dark-Matter-Electron Scattering from the DarkSide-50 Experiment
AU - The DarkSide Collaboration
AU - Agnes, P.
AU - Albuquerque, I. F.M.
AU - Alexander, T.
AU - Alton, A. K.
AU - Araujo, G. R.
AU - Asner, D. M.
AU - Ave, M.
AU - Back, H. O.
AU - Baldin, B.
AU - Batignani, G.
AU - Biery, K.
AU - Bocci, V.
AU - Bonfini, G.
AU - Bonivento, W.
AU - Bottino, B.
AU - Budano, F.
AU - Bussino, S.
AU - Cadeddu, M.
AU - Cadoni, M.
AU - Calaprice, F.
AU - Caminata, A.
AU - Canci, N.
AU - Candela, A.
AU - Caravati, M.
AU - Cariello, M.
AU - Carlini, M.
AU - Carpinelli, M.
AU - Catalanotti, S.
AU - Cataudella, V.
AU - Cavalcante, P.
AU - Cavuoti, S.
AU - Cereseto, R.
AU - Chepurnov, A.
AU - Cicalò, C.
AU - Cifarelli, L.
AU - Cocco, A. G.
AU - Covone, G.
AU - D'Angelo, D.
AU - D'Incecco, M.
AU - D'Urso, D.
AU - Davini, S.
AU - De Candia, A.
AU - De Cecco, S.
AU - De Deo, M.
AU - De Filippis, G.
AU - De Rosa, G.
AU - De Vincenzi, M.
AU - Galbiati, Cristiano
AU - Lisanti, Mariangela
AU - Meyers, Peter Daniel
PY - 2018/9/12
Y1 - 2018/9/12
N2 - 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/c2.
AB - 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/c2.
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U2 - 10.1103/PhysRevLett.121.111303
DO - 10.1103/PhysRevLett.121.111303
M3 - Article
VL - 121
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 11
M1 - 111303
ER -