Dark matter elastic scattering off nuclei can result in the excitation and ionization of the recoiling atom through the so-called Migdal effect. The energy deposition from the ionization electron adds to the energy deposited by the recoiling nuclear system and allows for the detection of interactions of sub-GeV/c^{2} mass dark matter. We present new constraints for sub-GeV/c^{2} dark matter using the dual-phase liquid argon time projection chamber of the DarkSide-50 experiment with an exposure of (12 306±184)  kg d. The analysis is based on the ionization signal alone and significantly enhances the sensitivity of DarkSide-50, enabling sensitivity to dark matter with masses down to 40  MeV/c^{2}. Furthermore, it sets the most stringent upper limit on the spin independent dark matter nucleon cross section for masses below 3.6  GeV/c^{2}.

Search for Dark-Matter-Nucleon Interactions via Migdal Effect with DarkSide-50 / P. Agnes, I.F.M. Albuquerque, T. Alexander, A.K. Alton, M. Ave, H.O. Back, G. Batignani, K. Biery, V. Bocci, W.M. Bonivento, B. Bottino, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, M.D. Campos, N. Canci, M. Caravati, N. Cargioli, M. Cariello, M. Carlini, V. Cataudella, P. Cavalcante, S. Cavuoti, S. Chashin, A. Chepurnov, C. Cicalò, G. Covone, D. D'Angelo, S. Davini, A. De Candia, S. De Cecco, G. De Filippis, G. De Rosa, A.V. Derbin, A. Devoto, M. D'Incecco, C. Dionisi, F. Dordei, M. Downing, D. D'Urso, M. Fairbairn, G. Fiorillo, D. Franco, F. Gabriele, C. Galbiati, C. Ghiano, C. Giganti, G.K. Giovanetti, A.M. Goretti, G. Grilli di Cortona, A. Grobov, M. Gromov, M. Guan, M. Gulino, B.R. Hackett, K. Herner, T. Hessel, B. Hosseini, F. Hubaut, E.V. Hungerford, A. Ianni, V. Ippolito, K. Keeter, C.L. Kendziora, M. Kimura, I. Kochanek, D. Korablev, G. Korga, A. Kubankin, M. Kuss, M. La Commara, M. Lai, X. Li, M. Lissia, G. Longo, O. Lychagina, I.N. Machulin, L.P. Mapelli, S.M. Mari, J. Maricic, A. Messina, R. Milincic, J. Monroe, M. Morrocchi, X. Mougeot, V.N. Muratova, P. Musico, A.O. Nozdrina, A. Oleinik, F. Ortica, L. Pagani, M. Pallavicini, L. Pandola, E. Pantic, E. Paoloni, K. Pelczar, N. Pelliccia, S. Piacentini, A. Pocar, D.M. Poehlmann, S. Pordes, S.S. Poudel, P. Pralavorio, D.D. Price, F. Ragusa, M. Razeti, A. Razeto, A.L. Renshaw, M. Rescigno, J. Rode, A. Romani, D. Sablone, O. Samoylov, E. Sandford, W. Sands, S. Sanfilippo, C. Savarese, B. Schlitzer, D.A. Semenov, A. Shchagin, A. Sheshukov, M.D. Skorokhvatov, O. Smirnov, A. Sotnikov, S. Stracka, Y. Suvorov, R. Tartaglia, G. Testera, A. Tonazzo, E.V. Unzhakov, A. Vishneva, R.B. Vogelaar, M. Wada, H. Wang, Y. Wang, S. Westerdale, M.M. Wojcik, X. Xiao, C. Yang, G. Zuzel. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 130:10(2023 Mar 10), pp. 101001.1-101001.7. [10.1103/PhysRevLett.130.101001]

Search for Dark-Matter-Nucleon Interactions via Migdal Effect with DarkSide-50

D. D'Angelo;F. Ragusa;
2023

Abstract

Dark matter elastic scattering off nuclei can result in the excitation and ionization of the recoiling atom through the so-called Migdal effect. The energy deposition from the ionization electron adds to the energy deposited by the recoiling nuclear system and allows for the detection of interactions of sub-GeV/c^{2} mass dark matter. We present new constraints for sub-GeV/c^{2} dark matter using the dual-phase liquid argon time projection chamber of the DarkSide-50 experiment with an exposure of (12 306±184)  kg d. The analysis is based on the ionization signal alone and significantly enhances the sensitivity of DarkSide-50, enabling sensitivity to dark matter with masses down to 40  MeV/c^{2}. Furthermore, it sets the most stringent upper limit on the spin independent dark matter nucleon cross section for masses below 3.6  GeV/c^{2}.
Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
10-mar-2023
6-mar-2023
Article (author)
File in questo prodotto:
File Dimensione Formato  
PhysRevLett.130.101001.pdf

accesso aperto

Tipologia: Publisher's version/PDF
Dimensione 622.07 kB
Formato Adobe PDF
622.07 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/973412
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 34
  • ???jsp.display-item.citation.isi??? 20
social impact