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arXiv · 1912.04248

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

D. S. Akerib·C. W. Akerlof·A. Alqahtani·S. K. Alsum·T. J. Anderson·N. Angelides·H. M. Araújo·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. Brás·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. López Paredes
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Abstract

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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D. S. Akerib, C. W. Akerlof, A. Alqahtani, S. K. Alsum, T. J. Anderson, N. Angelides, H. M. Araújo, 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. Brás, 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. López Paredes. 2019-12-09. Projected sensitivity of the LUX-ZEPLIN experiment to the $0\nu\beta\beta$ decay of $^{136}$Xe. https://doi.org/10.1103/physrevc.102.014602

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