{"paper":{"title":"Characterization of spurious-electron signals in the double-phase argon TPC of the DarkSide-50 experiment","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"hep-ex","authors_text":"A. Caminata, A. Chepurnov, A. De Candia, A. Devoto, A. Grobov, A. Ianni, A. K. Alton, A. Kubankin, A. L. Renshaw, A. Messina, A. M. Goretti, A. Oleinik, A. O. Nozdrina, A. Pocar, A. Razeto, A. Romani, A. Shchagin, A. Sheshukov, A. Sotnikov, A. Tonazzo, A. V. Derbin, A. Vishneva, B. Bottino, B. Hosseini, B. R. Hackett, B. Schlitzer, C. Cical\\`o, C. Dionisi, C. Galbiati, C. Ghiano, C. Giganti, C. L. Kendziora, C. Savarese, C. Sunny, C. Yang, DarkSide-50 Collaboration: P. Agnes, D. A. Semenov, D. D'Angelo, D. D'Urso, D. Franco, D. Korablev, D. Price, D. Sablone, E. Berzin, E. Pantic, E. Paoloni, E. Sandford, E. V. Hungerford, E. V. Unzhakov, F. Calaprice, F. Dordei, F. Gabriele, F. Hubaut, F. Ortica, F. Ragusa, G. Batignani, G. Covone, G. De Filippis, G. De Rosa, G. Fiorillo, G. Grilli di Cortona, G. K. Giovanetti, G. Korga, G. Longo, G. Testera, G. Zuzel, H. O. Back, H. Wang, I. F. Albuquerque, I. Kochanek, I. N. Machulin, J. Maricic, J. Monroe, J. Rode, K. Biery, K. Herner, K. Keeter, K. Pelczar, L. Pagani, L. Pandola, L. P. Mapelli, M. Ave, M. Cadeddu, M. Cadoni, M. Caravati, M. Cariello, M. Carlini, M. D. Campos, M. D'Incecco, M. Downing, M. D. Skorokhvatov, M. Fairbairn, M. Gromov, M. Guam, M. Gulino, M. Kimura, M. Kuss, M. Ku\\'zniak, M. La Commara, M. Lai, M. Lissia, M. Morrocchi, M. M. Wojcik, M. Pallavicini, M. Poehlmann, M. Razeti, M. Rescigno, M. Wada, N. Canci, N. Cargioli, N. Pelliccia, O. Lychagina, O. Samoylov, O. Smirnov, P. Cavalcante, P. Musico, P. Pralavorio, R. B. Vogelaar, R. Milincic, R. Stefanizzi, R. Tartaglia, S. Bussino, S. Cavuoti, S. Chashin, S. Davini, S. De Cecco, S. M. Mari, S. Piacentini, S. Pordes, S. Sanfilippo, S. S. Poudel, S. Stracka, S. Westerdale, T. Alexander, T. Hessel, T. Hugues, V. Bocci, V. Cataudella, V. Ippolito, V. N. Muratova, W. M. Bonivento, W. Sands, X. Li, X. Xiao, Y. Suvorov, Y. Wang","submitted_at":"2025-07-30T18:09:21Z","abstract_excerpt":"Spurious-electron signals in dual-phase noble-liquid time projection chambers have been observed in both xenon and argon Time Projection Chambers (TPCs). This paper presents the first comprehensive study of spurious electrons in argon, using data collected by the DarkSide-50 experiment at the INFN Laboratori Nazionali del Gran Sasso (LNGS). Understanding these events is a key factor in improving the sensitivity of low-mass dark matter searches exploiting ionization signals in dual-phase noble liquid TPCs.\n  We find that a significant fraction of spurious-electron events, ranging from 30 to 70%"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.23003","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2507.23003/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}