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

  • Author(s): Akerib, DS;
  • Akerlof, CW;
  • Alqahtani, A;
  • Alsum, SK;
  • Anderson, TJ;
  • Angelides, N;
  • Araújo, HM;
  • Armstrong, JE;
  • Arthurs, M;
  • Bai, X;
  • Balajthy, J;
  • Balashov, S;
  • Bang, J;
  • Baxter, A;
  • Bensinger, J;
  • Bernard, EP;
  • Bernstein, A;
  • Bhatti, A;
  • Biekert, A;
  • Biesiadzinski, TP;
  • Birch, HJ;
  • Boast, KE;
  • Boxer, B;
  • Brás, P;
  • Buckley, JH;
  • Bugaev, VV;
  • Burdin, S;
  • Busenitz, JK;
  • Cabrita, R;
  • Carels, C;
  • Carlsmith, DL;
  • Carmona-Benitez, MC;
  • Cascella, M;
  • Chan, C;
  • Chott, NI;
  • Cole, A;
  • Cottle, A;
  • Cutter, JE;
  • Dahl, CE;
  • De Viveiros, L;
  • Dobson, JEY;
  • Druszkiewicz, E;
  • Edberg, TK;
  • Eriksen, SR;
  • Fan, A;
  • Fiorucci, S;
  • Flaecher, H;
  • Fraser, ED;
  • Fruth, T;
  • Gaitskell, RJ;
  • Genovesi, J;
  • Ghag, C;
  • Gibson, E;
  • Gilchriese, MGD;
  • Gokhale, S;
  • Van Der Grinten, MGD;
  • Hall, CR;
  • Harrison, A;
  • Haselschwardt, SJ;
  • Hertel, SA;
  • Hor, JYK;
  • Horn, M;
  • Huang, DQ;
  • Ignarra, CM;
  • Jahangir, O;
  • Ji, W;
  • Johnson, J;
  • Kaboth, AC;
  • Kamaha, AC;
  • Kamdin, K;
  • Kazkaz, K;
  • Khaitan, D;
  • Khazov, A;
  • Khurana, I;
  • Kocher, CD;
  • Korley, L;
  • Korolkova, EV;
  • Kras, J;
  • Kraus, H;
  • Kravitz, S;
  • Kreczko, L;
  • Krikler, B;
  • Kudryavtsev, VA;
  • Leason, EA;
  • Lee, J;
  • Leonard, DS;
  • Lesko, KT;
  • Levy, C;
  • Li, J;
  • Liao, J;
  • Liao, FT;
  • Lin, J;
  • Lindote, A;
  • Linehan, R;
  • Lippincott, WH;
  • Liu, R;
  • Liu, X;
  • Loniewski, C;
  • Lopes, MI;
  • López Paredes, B
  • et al.
Abstract

The LUX-ZEPLIN (LZ) experiment will enable a neutrinoless double β decay search in parallel to the main science goal of discovering dark matter particle interactions. We report the expected LZ sensitivity to Xe136 neutrinoless double β decay, taking advantage of the significant (>600 kg) Xe136 mass contained within the active volume of LZ without isotopic enrichment. After 1000 live-days, the median exclusion sensitivity to the half-life of Xe136 is projected to be 1.06×1026 years (90% confidence level), similar to existing constraints. We also report the expected sensitivity of a possible subsequent dedicated exposure using 90% enrichment with Xe136 at 1.06×1027 years.

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