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arxiv: 1912.04248 · v2 · pith:GAEUIYHTnew · submitted 2019-12-09 · ⚛️ nucl-ex

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

D. S. Akerib , C. W. Akerlof , A. Alqahtani , S. K. Alsum , T. J. Anderson , N. Angelides , H. M. Ara\'ujo , J. E. Armstrong
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M. Arthurs X. Bai J. Balajthy S. Balashov J. Bang A. Baxter J. Bensinger E. P. Bernard A. Bernstein A. Bhatti A. Biekert T. P. Biesiadzinski H. J. Birch K. E. Boast B. Boxer P. Br\'as J. H. Buckley V. V. Bugaev S. Burdin J. K. Busenitz R. Cabrita C. Carels D. L. Carlsmith M. C. Carmona Benitez M. Cascella C. Chan N. I. Chott A. Cole A. Cottle J. E. Cutter C. E. Dahl L. de Viveiros J. E. Y. Dobson E. Druszkiewicz T. K. Edberg S. R. Eriksen A. Fan S. Fiorucci H. Flaecher E. D. Fraser T. Fruth R. J. Gaitskell J. Genovesi C. Ghag E. Gibson M. G. D. Gilchriese S. Gokhale M. G. D. van der Grinten C. R. Hall A. Harrison S. J. Haselschwardt S. A. Hertel J. YK. Hor M. Horn D. Q. Huang C. M. Ignarra O. Jahangir W. Ji J. Johnson A. C. Kaboth A. C. Kamaha K. Kamdin K. Kazkaz D. Khaitan A. Khazov I. Khurana C. D. Kocher L. Korley E. V. Korolkova J. Kras H. Kraus S. Kravitz L. Kreczko B. Krikler V. A. Kudryavtsev E. A. Leason J. Lee D. S. Leonard K. T. Lesko C. Levy J. Li J. Liao F. T. Liao J. Lin A. Lindote R. Linehan W. H. Lippincott R. Liu X. Liu C. Loniewski M. I. Lopes B. L\'opez Paredes W. Lorenzon S. Luitz J. M. Lyle P. A. Majewski A. Manalaysay L. Manenti R. L. Mannino N. Marangou M. F. Marzioni D. N. McKinsey J. McLaughlin Y. Meng E. H. Miller E. Mizrachi A. Monte M. E. Monzani J. A. Morad E. Morrison B. J. Mount A. St. J. Murphy D. Naim A. Naylor C. Nedlik C. Nehrkorn H. N. Nelson F. Neves J. A. Nikoleyczik A. Nilima K. O'Sullivan I. Olcina K. C. Oliver-Mallory S. Pal K. J. Palladino J. Palmer N. Parveen E. K. Pease B. Penning G. Pereira K. Pushkin J. Reichenbacher C. A. Rhyne Q. Riffard G. R. C. Rischbieter R. Rosero P. Rossiter G. Rutherford D. Santone A. B. M. R. Sazzad R. W. Schnee M. Schubnell D. Seymour S. Shaw T. A. Shutt J. J. Silk C. Silva R. Smith M. Solmaz V. N. Solovov P. Sorensen I. Stancu A. Stevens K. Stifter T. J. Sumner N. Swanson M. Szydagis M. Tan W. C. Taylor R. Taylor D. J. Temples P. A. Terman D. R. Tiedt M. Timalsina A. Tom\'as M. Tripathi D. R. Tronstad W. Turner L. Tvrznikova U. Utku A. Vacheret A. Vaitkus J. J. Wang W. Wang J. R. Watson R. C. Webb R. G. White T. J. Whitis F. L. H. Wolfs D. Woodward X. Xiang J. Xu M. Yeh P. Zarzhitsky
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keywords betasensitivitydecaydoubleenrichmentexpectedexperimentlux-zeplin
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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.

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