Sensitivity of a tonne-scale NEXT detector for neutrinoless double-beta decay searches

The NEXT collaboration

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The Neutrino Experiment with a Xenon TPC (NEXT) searches for the neutrinoless double-beta (0νββ) decay of 136Xe using high-pressure xenon gas TPCs with electroluminescent amplification. A scaled-up version of this technology with about 1 tonne of enriched xenon could reach in less than 5 years of operation a sensitivity to the half-life of 0νββ decay better than 1027 years, improving the current limits by at least one order of magnitude. This prediction is based on a well-understood background model dominated by radiogenic sources. The detector concept presented here represents a first step on a compelling path towards sensitivity to the parameter space defined by the inverted ordering of neutrino masses, and beyond. [Figure not available: see fulltext.]

Original languageEnglish (US)
Article number164
JournalJournal of High Energy Physics
Issue number8
StatePublished - Aug 2021


  • Dark Matter and Double Beta Decay (experiments)

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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