학술논문
Background determination for the LUX-ZEPLIN dark matter experiment
Document Type
article
Author
Aalbers, J; Akerib, DS; Musalhi, AK Al; Alder, F; Alsum, SK; Amarasinghe, CS; Ames, A; Anderson, TJ; Angelides, N; Araújo, HM; Armstrong, JE; Arthurs, M; Baker, A; Bang, J; Bargemann, JW; Baxter, A; Beattie, K; Beltrame, P; Bernard, EP; Bhatti, A; Biekert, A; Biesiadzinski, TP; Birch, HJ; Blockinger, GM; Boxer, B; Brew, CAJ; Brás, P; Burdin, S; 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; 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
Source
Physical Review D. 108(1)
Subject
Language
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.