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

D. S. Akerib,C. W. Akerlof,A. Alqahtani,S. K. Alsum,T. J. Anderson,N. Angelides,H. M. Araujo,J. E. Armstrong, 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. Bras,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,I Chott N.,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. Y-K 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,V Korolkova E.,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,I Lopes M.,B. Lopez 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. Tomas,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

PHYSICAL REVIEW C（2020）

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摘要

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 Xe-136 neutrinoless double beta decay, taking advantage of the significant (>600 kg) Xe-136 mass contained within the active volume of LZ without isotopic enrichment. After 1000 live-days, the median exclusion sensitivity to the half-life of Xe-136 is projected to be 1.06 x 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 Xe-136 at 1.06 x 10(27) years.

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