Dark Matter Search Results from 1.54Tonne·Year Exposure of PandaX-4T

Collaboration
Aug 1, 2024
7 pages
Published in:
  • Phys.Rev.Lett. 134 (2025) 1, 011805
  • Published: Jan 9, 2025
e-Print:

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Abstract: (APS)
In this Letter, we report the dark matter search results from the commissioning run (Run0) and the first science run (Run1) of the PandaX-4T experiment. The two datasets were processed with a unified procedure, with the Run1 data treated blindly. The data processing is improved compared to previous work, unifying the low-level signal reconstruction in a wide energy range up to 120 keV. With a total exposure of 1.54tonne·year, no significant excess of nuclear recoil events is found. The lowest 90% confidence level exclusion on the spin-independent cross section is 1.6×10-47cm2 at a dark matter mass of 40GeV/c2. Our results represent the most stringent constraint for a dark matter mass above 100GeV/c2.
Note:
  • 10 pages, 9 figures (appendix included)