1. First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment
- Author
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Aalbers, J, Akerib, DS, Akerlof, CW, Al Musalhi, AK, Alder, F, Alqahtani, A, Alsum, SK, Amarasinghe, CS, Ames, A, Anderson, TJ, Angelides, N, Araújo, HM, Armstrong, JE, Arthurs, M, Azadi, S, Bailey, AJ, Baker, A, Balajthy, J, Balashov, S, Bang, J, Bargemann, JW, Barry, MJ, Barthel, J, Bauer, D, Baxter, A, Beattie, K, Belle, J, Beltrame, P, Bensinger, J, Benson, T, Bernard, EP, Bhatti, A, Biekert, A, Biesiadzinski, TP, Birch, HJ, Birrittella, B, Blockinger, GM, Boast, KE, Boxer, B, Bramante, R, Brew, CAJ, Brás, P, Buckley, JH, Bugaev, VV, Burdin, S, Busenitz, JK, Buuck, M, Cabrita, R, Carels, C, Carlsmith, DL, Carlson, B, Carmona-Benitez, MC, Cascella, M, Chan, C, Chawla, A, Chen, H, Cherwinka, JJ, Chott, NI, Cole, A, Coleman, J, Converse, MV, Cottle, A, Cox, G, Craddock, WW, Creaner, O, Curran, D, Currie, A, Cutter, JE, Dahl, CE, David, A, Davis, J, Davison, TJR, Delgaudio, J, Dey, S, de Viveiros, L, Dobi, A, Dobson, JEY, Druszkiewicz, E, Dushkin, A, Edberg, TK, Edwards, WR, Elnimr, MM, Emmet, WT, Eriksen, SR, Faham, CH, Fan, A, Fayer, S, Fearon, NM, Fiorucci, S, Flaecher, H, Ford, P, Francis, VB, Fraser, ED, Fruth, T, Gaitskell, RJ, Gantos, NJ, Garcia, D, Geffre, A, Gehman, VM, and Genovesi, J
- Subjects
Nuclear and Plasma Physics ,Particle and High Energy Physics ,Physical Sciences ,LUX-ZEPLIN Collaboration ,Mathematical Sciences ,Engineering ,General Physics ,Mathematical sciences ,Physical sciences - Abstract
The LUX-ZEPLIN experiment is a dark matter detector centered on a dual-phase xenon time projection chamber operating at the Sanford Underground Research Facility in Lead, South Dakota, USA. This Letter reports results from LUX-ZEPLIN's first search for weakly interacting massive particles (WIMPs) with an exposure of 60 live days using a fiducial mass of 5.5 t. A profile-likelihood ratio analysis shows the data to be consistent with a background-only hypothesis, setting new limits on spin-independent WIMP-nucleon, spin-dependent WIMP-neutron, and spin-dependent WIMP-proton cross sections for WIMP masses above 9 GeV/c^{2}. The most stringent limit is set for spin-independent scattering at 36 GeV/c^{2}, rejecting cross sections above 9.2×10^{-48} cm at the 90% confidence level.
- Published
- 2023