WIMP Dark Matter Search using a 3.1 Tonne-Year Exposure of the XENONnT Experiment

Abstract

We report on a search for weakly interacting massive particle (WIMP) dark matter (DM) via elastic DM-xenon-nucleus interactions in the XENONnT experiment. We combine datasets from the first and second science campaigns resulting in a total exposure of 3.1 tonne-years. In a blind analysis of nuclear recoil events with energies above $3.8\mathrm{ke}{\mathrm{V}}_{\mathrm{NR}}$, we find no significant excess above background. We set new upper limits on the spin-independent WIMP-nucleon scattering cross section for WIMP masses above $10\mathrm{GeV}/c^2$ with a minimum of $1.7\times 10^{-47}\mathrm{c}{\mathrm{m}}^2$ at $90\%$ confidence level for a WIMP mass of $30\mathrm{GeV}/c^2$. We achieve a best median sensitivity of $1.4\times 10^{-47}\mathrm{c}{\mathrm{m}}^2$ for a $41\mathrm{GeV}/c^2$ WIMP. Compared to the result from the first XENONnT science dataset, we improve our sensitivity by a factor of up to 1.8.

Limits are included in the submission file

References in corpus (19)

• First Dark Matter Search with Nuclear Recoils from the XENONnT Experiment
• Dark Matter Search Results from the Complete Exposure of the PICO-60 C${}_3$F${}_8$ Bubble Chamber
• Dark Matter Search Results from 4.2 Tonne-Years of Exposure of the LUX-ZEPLIN (LZ) Experiment
• Simultaneous Measurement of Ionization and Scintillation from Nuclear Recoils in Liquid Xenon as Target for a Dark Matter Experiment
• Coherent elastic neutrino-nucleus scattering: EFT analysis and nuclear responses
• Dark Matter Search Results from 1.54 Tonne$\cdot$Year Exposure of PandaX-4T
• Emission of Single and Few Electrons in XENON1T and Limits on Light Dark Matter
• Conceptual design and simulation of a water Cherenkov muon veto for the XENON1T experiment
• The XENONnT Dark Matter Experiment
• Double-Weak Decays of ${}^{124}$Xe and ${}^{136}$Xe in the XENON1T and XENONnT Experiments
• Design, construction and commissioning of a high-flow radon removal system for XENONnT
• Liquid-phase purification for multi-tonne xenon detectors
• Improved quality tests of R11410-21 photomultiplier tubes for the XENONnT experiment
• Measurement of Charge and Light Yields for ${}^{127}$Xe L-Shell Electron Captures in Liquid Xenon
• A Review of NEST Models for Liquid Xenon and Exhaustive Comparison to Other Approaches
• The Triggerless Data Acquisition System of the XENONnT Experiment
• Design and performance of the field cage for the XENONnT experiment
• The neutron veto of the XENONnT experiment: Results with demineralized water
• XENONnT WIMP Search: Signal & Background Modeling and Statistical Inference

Cited by in corpus (14)

• New light mediators and the neutrino fog: Implications from XENONnT nuclear recoil data
• Challenging Spontaneous Quantum Collapse with XENONnT
• Light Dark Matter Search with 7.8 Tonne-Year of Ionization-Only Data in XENONnT
• Probing Leptophobic Dark Sectors via Gravitational Wave Signatures
• Probing mixed-state dark matter and flavor observables in a scalar-assisted baryonic gauge theory
• Memory burden effect of regular primordial black holes
• Design, construction, and testing of the PandaX-xT cryogenics system
• Probing the Solar ${}^8$B Neutrino Fog with XENONnT
• Search for New Physics via Low-Energy Electron Recoils with a 4.2 Tonne\times Year Exposure from the LZ Experiment
• Pseudo-Nambu-Goldstone Dark Matter in Flux Compactification
• Freeze-in and Freeze-out in a Right-Handed Neutrino Extended MSSM with a Seesaw Mechanism
• ASTAROTH: A Novel Detector for Dark Matter Direct Detection Using Cryogenic SiPMs
• Hydrogenated carbon structures as directional sub-GeV dark matter detectors
• Probing inelastic sub-GeV dark matter at the DUNE near detector