Dark Matter Search Results from the PandaX-4T Commissioning Run

2021/07/31 by Yue Meng, Zhou Wang, Yi Tao +76 · 4 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Dark Matter and Cosmic Phenomena #Dark energy #Dark matter #Light dark matter #Limit (mathematics) #Particle physics theoretical and experimental studies #Recoil #Time projection chamber #Xenon #hep-ex #physics.ins-det

paper · pdf · doi:10.1103/physrevlett.127.261802

proof draft as PRL

openalex created_date 2021/08/02 · arxiv created 2021/12/18 · openalex publication_date 2021/12/23 · arxiv updated 2022/01/05 · openalex updated_date 2026/08/06

Abstract

We report the first dark matter search results using the commissioning data from PandaX-4T. Using a time projection chamber with 3.7 tonne of liquid xenon target and an exposure of 0.63 tonne·year, 1058 candidate events are identified within an approximate nuclear recoil energy window between 5 and 100 keV. No significant excess over background is observed. Our data set a stringent limit to the dark matter-nucleon spin-independent interactions, with a lowest excluded cross section (90% C.L.) of 3.8×10^-47 cm² at a dark matter mass of 40 GeV/c².

Citations

• emcee: The MCMC Hammer
• Particle dark matter: evidence, candidates and constraints
• XENON1T dark matter data analysis: Signal and background models and statistical inference
• Design and commissioning of the PandaX-4T cryogenic distillation system for krypton and radon removal
• The cryogenics and xenon handling system for the PandaX-4T experiment

Cited by

• Neutrino Up-scattering via the Dipole Portal at Forward LHC Detectors
• Refined ultralight scalar dark matter searches with compact atom gradiometers
• Dark matter transient annihilations in the early Universe
• Gamma-ray background from rock: studies for a next-generation dark matter experiment based on liquid xenon