Search for dark matter-nucleon interactions via Migdal effect with DarkSide-50 [electronic resource]
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 interaction...
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Full Text (via OSTI) |
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| Corporate Authors: | , |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. Office of High Energy Physics ; Distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2022.
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| Subjects: |
| Summary: | 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 (12306 $\pm$ 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$̂2$ |
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| Item Description: | Published through Scitech Connect. 07/25/2022. "FERMILAB-PUB-22-588-ND-PPD-SCD." "arXiv:2207.11967." "Other: oai:inspirehep.net:2122440." Agnes, P.; et al.; |
| Physical Description: | Medium: ED : digital, PDF file. |