Projected sensitivity of the LUX-ZEPLIN experiment to the 0νββ decay of ¹³⁶Xe

Akerib, DS, Akerlof, CW, Alqahtani, A, Alsum, SK, Anderson, TJ, Angelides, N, Araujo, HM, Armstrong, JE, Arthurs, M, Bai, X
et al (show 183 more authors) (2020) Projected sensitivity of the LUX-ZEPLIN experiment to the 0νββ decay of ¹³⁶Xe. Physical Review C, 102 (1). 014602-.

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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.

Item Type: Article
Additional Information: 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
Uncontrolled Keywords: Rare decays, Dark matter detectors, Radiation detectors
Depositing User: Symplectic Admin
Date Deposited: 17 Sep 2020 07:55
Last Modified: 18 Jan 2023 23:33
DOI: 10.1103/PhysRevC.102.014602
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