First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment

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 (WIMP...

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Veröffentlicht in:	arXiv.org 2023-08
Hauptverfasser:	Akerib, D S, Akerlof, C W, Alder, F, Alqahtani, A, Baker, A, Balajthy, J, Bang, J, Boast, K E, Boxer, B, Bramante, R, Buckley, J H, Busenitz, J K, Buuck, M, Carels, C, Carlsmith, D L, Cascella, M, Cherwinka, J J, Cole, A, Creaner, O, Curran, D, Delgaudio, J, de Viveiros, L, Elnimr, M M, Fearon, N M, Fiorucci, S, Flaecher, H, d, P, Geffre, A, Gehman, V M, Gibson, E, Gilchriese, M G D, Gomber, B, Green, J, Hall, C R, Horn, M, Kaboth, A C, Kasey, V, Kazkaz, K, Khaleeq, M, Khazov, A, Kim, Y D, Kodroff, D, Korolkova, E V, Kras, J, Kraus, H, Krikler, B, Leonard, R, Levy, C, J Li, F -T Liao, Liu, R, B López Paredes, Luitz, S, Lyle, J M, Majewski, P A, Marangou, N, Miller, E H, Monte, A, Monzani, M E, Morales Mendoza, J D, Murphy, A St J, Naim, D, Nedlik, C, Nehrkorn, C, Orpwood, J, Palmer, J, Pangilinan, M, Pereira, G, Piepke, A, Pushkin, K, Qie, Y, Ratcliff, B N, Rodriguez, A, Rose, H J, Saba, J S, Shutt, T, Smith, R, Sorensen, P, Soria, J, Stark, M R, Stifter, K, Szydagis, M, Tennyson, B P, Thomas, K J, Tong, Z, Tovey, D R, Trask, M, Tripathi, M, Tronstad, D R, Turner, W, Wang, A, Wang, J J, Watson, J R, White, J T, Williams, M, Witherell, M S, Wolfs, J D, Xiao, Q, Yin, J, Zweig, E A
Format:	Artikel
Sprache:	eng
Schlagworte:	Confidence intervals Cross-sections Dark matter Physics - Cosmology and Nongalactic Astrophysics Physics - High Energy Physics - Experiment Radiation counters Research facilities Weakly interacting massive particles Xenon
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Zusammenfassung:	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\(\times 10^{-48}\) cm\(^2\) at the 90% confidence level.
ISSN:	2331-8422
DOI:	10.48550/arxiv.2207.03764