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Article Abstract
We report the search for neutrinoless double-beta decay of Xe from the PandaX-4T experiment with a 3.7-tonne natural xenon target. The data reconstruction and the background modeling are optimized in the MeV energy region. A blind analysis is performed with data from the commissioning run and the first science run. No significant excess of signal over the background is observed. A lower limit on the half-life of Xe neutrinoless double-beta decay is established to be 2.1×10 yr at the 90% confidence level, with a Xe exposure of 44.6 kg⋅yr. Our result represents the most stringent constraint from a natural xenon detector to date.
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| http://dx.doi.org/10.1016/j.scib.2025.03.009 | DOI Listing |
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