학술논문
Background Determination for the LUX-ZEPLIN (LZ) Dark Matter Experiment
Document Type
Working Paper
Author
Aalbers, J.; Akerib, D. S.; Musalhi, A. K. Al; Alder, F.; Alsum, S. K.; Amarasinghe, C. S.; Ames, A.; Anderson, T. J.; Angelides, N.; Araújo, H. M.; Armstrong, J. E.; Arthurs, M.; Baker, A.; Bang, J.; Bargemann, J. W.; Baxter, A.; Beattie, K.; Beltrame, P.; Bernard, E. P.; Bhatti, A.; Biekert, A.; Biesiadzinski, T. P.; Birch, H. J.; Blockinger, G. M.; Boxer, B.; Brew, C. A. J.; Brás, P.; Burdin, S.; Buuck, M.; Cabrita, R.; Carmona-Benitez, M. C.; Chan, C.; Chawla, A.; Chen, H.; Chiang, A. P. S.; Chott, N. I.; Converse, M. V.; Cottle, A.; Cox, G.; Creaner, O.; Dahl, C. E.; David, A.; Dey, S.; de Viveiros, L.; Ding, C.; Dobson, J. E. Y.; Druszkiewicz, E.; Eriksen, S. R.; Fan, A.; Fearon, N. M.; Fiorucci, S.; Flaecher, H.; Fraser, E. D.; Fruth, T.; Gaitskell, R. J.; Genovesi, J.; Ghag, C.; Gibbons, R.; Gilchriese, M. G. D.; Gokhale, S.; Green, J.; van der Grinten, M. G. D.; Gwilliam, C. B.; Hall, C. R.; Han, S.; Hartigan-O'Connor, E.; Haselschwardt, S. J.; Hertel, S. A.; Heuermann, G.; Horn, M.; Huang, D. Q.; Hunt, D.; Ignarra, C. M.; Jacobsen, R. G.; Jahangir, O.; James, R. S.; Johnson, J.; Kaboth, A. C.; Kamaha, A. C.; Khaitan, D.; Khurana, I.; Kirk, R.; Kodroff, D.; Korley, L.; Korolkova, E. V.; Kraus, H.; Kravitz, S.; Kreczko, L.; Krikler, B.; Kudryavtsev, V. A.; Leason, E. A.; Lee, J.; Leonard, D. S.; Lesko, K. T.; Levy, C.; Lin, J.; Lindote, A.; Linehan, R.; Lippincott, W. H.; Liu, X.; Lopes, M. I.; Asamar, E. Lopez; Paredes, B. López; Lorenzon, W.; Lu, C.; Luitz, S.; Majewski, P. A.; Manalaysay, A.; Mannino, R. L.; Marangou, N.; McCarthy, M. E.; McKinsey, D. N.; McLaughlin, J.; Miller, E. H.; Mizrachi, E.; Monte, A.; Monzani, M. E.; Mendoza, J. D. Morales; Morrison, E.; Mount, B. J.; Murdy, M.; Murphy, A. St. J.; Naim, D.; Naylor, A.; Nedlik, C.; Nelson, H. N.; Neves, F.; Nguyen, A.; Nikoleyczik, J. A.; Olcina, I.; Oliver-Mallory, K. C.; Orpwood, J.; Palladino, K. J.; Palmer, J.; Parveen, N.; Patton, S. J.; Penning, B.; Pereira, G.; Perry, E.; Pershing, T.; Piepke, A.; Porzio, D.; Poudel, S.; Qie, Y.; Reichenbacher, J.; Rhyne, C. A.; Riffard, Q.; Rischbieter, G. R. C.; Riyat, H. S.; Rosero, R.; Rossiter, P.; Rushton, T.; Santone, D.; Sazzad, A. B. M. R.; Schnee, R. W.; Shaw, S.; Shutt, T.; Silk, J. J.; Silva, C.; Sinev, G.; Smith, R.; Solmaz, M.; Solovov, V. N.; Sorensen, P.; Soria, J.; Stancu, I.; Stevens, A.; Stifter, K.; Suerfu, B.; Sumner, T. J.; Swanson, N.; Szydagis, M.; Taylor, R.; Taylor, W. C.; Temples, D. J.; Terman, P. A.; Tiedt, D. R.; Timalsina, M.; Tong, Z.; Tovey, D. R.; Tranter, J.; Trask, M.; Tripathi, M.; Tronstad, D. R.; Turner, W.; Utku, U.; Vaitkus, A. C.; Wang, A.; Wang, J. J.; Wang, W.; Wang, Y.; Watson, J. R.; Webb, R. C.; Whitis, T. J.; Williams, M.; Wolfs, F. L. H.; Woodford, S.; Woodward, D.; Wright, C. J.; Xia, Q.; Xiang, X.; Xu, J.; Yeh, M.
Source
Phys. Rev. D 108, 012010 (2023)
Subject
Language
Abstract
The LUX-ZEPLIN experiment recently reported limits on WIMP-nucleus interactions from its initial science run, down to $9.2\times10^{-48}$ cm$^2$ for the spin-independent interaction of a 36 GeV/c$^2$ WIMP at 90% confidence level. In this paper, we present a comprehensive analysis of the backgrounds important for this result and for other upcoming physics analyses, including neutrinoless double-beta decay searches and effective field theory interpretations of LUX-ZEPLIN data. We confirm that the in-situ determinations of bulk and fixed radioactive backgrounds are consistent with expectations from the ex-situ assays. The observed background rate after WIMP search criteria were applied was $(6.3\pm0.5)\times10^{-5}$ events/keV$_{ee}$/kg/day in the low-energy region, approximately 60 times lower than the equivalent rate reported by the LUX experiment.
Comment: 25 pages, 15 figures
Comment: 25 pages, 15 figures