Projected sensitivity of the LUX-ZEPLIN experiment to the $0νββ$ decay of $^{136}$Xe

The LUX-ZEPLIN (LZ) Collaboration

Research output: Contribution to journalArticle (Academic Journal)peer-review


The LUX-ZEPLIN (LZ) experiment will enable a neutrinoless double beta decay search in parallel to the main science goal of discovering dark matter particle interactions. We report the expected LZ sensitivity to $^{136}$Xe neutrinoless double beta decay, taking advantage of the significant ($>$600 kg) $^{136}$Xe mass contained within the active volume of LZ without isotopic enrichment. After 1000 live-days, the median exclusion sensitivity to the half-life of $^{136}$Xe is projected to be 1.06$\times$10$^{26}$ years (90% confidence level), similar to existing constraints. We also report the expected sensitivity of a possible subsequent dedicated exposure using 90% enrichment with $^{136}$Xe at 1.06$\times$10$^{27}$ years.
Original languageEnglish
Article number014602
JournalPhys. Rev. C
Publication statusPublished - 6 Jul 2020

Bibliographical note

13 pages, 7 figures, 2 tables, version 2 changes: additional clarifications requested by referee on Sections II.A, III.C, III.E, III.F and IV.B


  • nucl-ex


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