Sensitivity projections for a dual-phase argon TPC optimized for light dark matter searches through the ionization channel

Abstract

Dark matter lighter than 10 GeV/c${}^2$ encompasses a promising range of candidates. A conceptual design for a new detector, DarkSide-LowMass, is presented, based on the DarkSide-50 detector and progress toward DarkSide-20k, optimized for a low-threshold electron-counting measurement. Sensitivity to light dark matter is explored for various potential energy thresholds and background rates. These studies show that DarkSide-LowMass can achieve sensitivity to light dark matter down to the solar neutrino floor for GeV-scale masses and significant sensitivity down to 10 MeV/c${}^2$ considering the Migdal effect or interactions with electrons. Requirements for optimizing the detector's sensitivity are explored, as are potential sensitivity gains from modeling and mitigating spurious electron backgrounds that may dominate the signal at the lowest energies.

References in corpus (23)

• Results from a search for dark matter in the complete LUX exposure
• Dark Matter Results From 54-Ton-Day Exposure of PandaX-II Experiment
• Observation of Coherent Elastic Neutrino-Nucleus Scattering
• The RAVE Survey: Constraining the Local Galactic Escape Speed
• DARWIN: towards the ultimate dark matter detector
• A new Generation of Standard Solar Models
• Improved GRAVITY astrometric accuracy from modeling of optical aberrations
• Measurement of Scintillation and Ionization Yield and Scintillation Pulse Shape from Nuclear Recoils in Liquid Argon
• Search for dark matter particle interactions with electron final states with DarkSide-50
• ACTIVIA: Calculation of Isotope Production Cross-sections and Yields
• A Review of Basic Energy Reconstruction Techniques in Liquid Xenon and Argon Detectors for Dark Matter and Neutrino Physics Using NEST
• Snowmass2021 Cosmic Frontier: The landscape of low-threshold dark matter direct detection in the next decade
• Simulation of argon response and light detection in the DarkSide-50 dual phase TPC
• Cosmogenic production of tritium in dark matter detectors
• Calibration of the liquid argon ionization response to low energy electronic and nuclear recoils with DarkSide-50
• First Large Scale Production of Low Radioactivity Argon From Underground Sources
• Electron emission properties of two-phase argon and argon-nitrogen avalanche detectors
• Performance of Hamamatsu VUV4 SiPMs for detecting liquid argon scintillation
• A. Fluka Study of Underground Cosmogenic Neutron Production
• A Radon Progeny Deposition Model
• Scintillation and optical properties of xenon-doped liquid argon
• A Facility for Low-Radioactivity Underground Argon
• Snowmass 2021 Scintillating Bubble Chambers: Liquid-noble Bubble Chambers for Dark Matter and CE$\nu$NS Detection

Cited by in corpus (11)

• DarkSide-20k sensitivity to light dark matter particles
• The science and technology of liquid argon detectors
• Study of cosmogenic activation above ground for the DarkSide-20k experiment
• On the cosmology and terrestrial signals of sexaquark dark matter
• Asymmetric long-lived dark matter and leptogenesis from type-III seesaw framework
• Search for dark matter annual modulation with DarkSide-50
• Verifiable type-III seesaw and dark matter in a gauged $\mathbf{U}(1{)}_{\mathrm{B}-\mathrm{L}}$ symmetric model
• Impact of extreme ultraviolet radiation on the scintillation of pure and xenon-doped liquid argon
• Unified Origin of Dirac Neutrino and Asymmetric Dark Matter Masses via a Dirac-Type Leptogenesis
• Composite asymmetric dark matter with a dark photon portal: Multimessenger tests
• Reviving $Z^{\prime }$ Portal Dark Matter with Conversion Mechanism