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Aalbers, J, Akerib, DS, Musalhi, AK Al, Alder, F, Alsum, SK, Amarasinghe, CS, Ames, A, Anderson, TJ, Angelides, N, Araújo, HM et al (show 193 more authors) , Armstrong, JE, Arthurs, M, Baker, A, Bang, J, Bargemann, JW, Baxter, A, Beattie, K, Beltrame, P
ORCID: 0000-0001-9523-6128, Bernard, EP, Bhatti, A, Biekert, A, Biesiadzinski, TP, Birch, HJ, Blockinger, GM, Boxer, B, Brew, CAJ, Brás, P, Burdin, S
ORCID: 0000-0003-4831-4132, Buuck, M, Cabrita, R, Carmona-Benitez, MC, Chan, C, Chawla, A, Chen, H, Chiang, APS, Chott, NI, Converse, MV, Cottle, A, Cox, G, Creaner, O, Dahl, CE, David, A, Dey, S, de Viveiros, L, Ding, C, Dobson, JEY, Druszkiewicz, E, Eriksen, SR, Fan, A, Fearon, NM, Fiorucci, S, Flaecher, H, Fraser, ED, Fruth, T, Gaitskell, RJ, Genovesi, J, Ghag, C, Gibbons, R, Gilchriese, MGD, Gokhale, S, Green, J, van der Grinten, MGD, Gwilliam, CB
ORCID: 0000-0002-9401-5304, Hall, CR, Han, S, Hartigan-O’Connor, E, Haselschwardt, SJ, Hertel, SA, Heuermann, G, Horn, M, Huang, DQ, Hunt, D, Ignarra, CM, Jacobsen, RG, Jahangir, O, James, RS, Johnson, J, Kaboth, AC, Kamaha, AC, Khaitan, D, Khurana, I, Kirk, R, Kodroff, D, Korley, L, Korolkova, EV, Kraus, H, Kravitz, S, Kreczko, L, Krikler, B, Kudryavtsev, VA, Leason, EA, Lee, J, Leonard, DS, Lesko, KT, Levy, C, Lin, J, Lindote, A, Linehan, R, Lippincott, WH, Liu, X, Lopes, MI, Asamar, E Lopez, Paredes, B López, Lorenzon, W, Lu, C, Luitz, S, Majewski, PA, Manalaysay, A, Mannino, RL, Marangou, N, McCarthy, ME, McKinsey, DN, McLaughlin, J, Miller, EH, Mizrachi, E, Monte, A, Monzani, ME, Mendoza, JD Morales, Morrison, E, Mount, BJ, Murdy, M, Murphy, A St J, Naim, D, Naylor, A, Nedlik, C, Nelson, HN, Neves, F, Nguyen, A, Nikoleyczik, JA, Olcina, I, Oliver-Mallory, KC, Orpwood, J, Palladino, KJ, Palmer, J, Parveen, N, Patton, SJ, Penning, B, Pereira, G, Perry, E, Pershing, T, Piepke, A, Porzio, D, Poudel, S, Qie, Y, Reichenbacher, J, Rhyne, CA, Riffard, Q, Rischbieter, GRC, Riyat, HS, Rosero, R, Rossiter, P, Rushton, T, Santone, D, Sazzad, ABMR, Schnee, RW, Shaw, S, Shutt, T, Silk, JJ, Silva, C, Sinev, G, Smith, R, Solmaz, M, Solovov, VN, Sorensen, P, Soria, J, Stancu, I, Stevens, A, Stifter, K, Suerfu, B, Sumner, TJ, Swanson, N, Szydagis, M, Taylor, R, Taylor, WC, Temples, DJ, Terman, PA, Tiedt, DR, Timalsina, M, Tong, Z, Tovey, DR, Tranter, J, Trask, M, Tripathi, M, Tronstad, DR, Turner, W, Utku, U, Vaitkus, AC, Wang, A, Wang, JJ, Wang, W, Wang, Y, Watson, JR, Webb, RC, Whitis, TJ, Williams, M, Wolfs, FLH, Woodford, S, Woodward, D, Wright, CJ, Xia, Q, Xiang, X, Xu, J and Yeh, M
(2023)
Background determination for the LUX-ZEPLIN dark matter experiment.
Physical Review D, 108 (1).
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Abstract
The LUX-ZEPLIN experiment recently reported limits on WIMP-nucleus interactions from its initial science run, down to 9.2×10-48 cm2 for the spin-independent interaction of a 36 GeV/c2 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±0.5)×10-5 events/keVee/kg/day in the low-energy region, approximately 60 times lower than the equivalent rate reported by the LUX experiment.