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https://hdl.handle.net/10316/100968
Title: | First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment | Authors: | Aalbers, J. Akerib, D. S. Akerlof, C. W. Musalhi, A. K. Al Brás, P. Cabrita, R. Lindote, A. Lopes, M. I. Lopez Asamar, E. Neves, F. Pal, S. Pereira, C. Pereira, G. Porzio, D. Rodrigues, J. P. Silva, C. Solovov, V. N. et al. |
Keywords: | High Energy Physics - Experiment; Cosmology and Nongalactic Astrophysics | Issue Date: | 8-Jul-2022 | Project: | info:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC/FIS-PAR/28557/2017/PT/XENON1T e XENONnT experiments participation info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC/FIS-NUC/0145/2014/PT/Direct dark matter search with the XENON1T and XENONnT experiments |
Abstract: | The LUX-ZEPLIN (LZ) 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 LZ'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 at 30 GeV/c$^2$, excluding cross sections above 5.9$\times 10^{-48}$ cm$^2$ at the 90\% confidence level. | Description: | 9 pages, 6 figures. See https://tinyurl.com/LZDataReleaseRun1 for a data release related to this paper | URI: | https://hdl.handle.net/10316/100968 | DOI: | http://arxiv.org/abs/2207.03764v2 https://doi.org/10.48550/arXiv.2207.03764 |
Rights: | openAccess |
Appears in Collections: | I&D CFis - Artigos em Revistas Internacionais |
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2207.03764.pdf | 1.22 MB | Adobe PDF | View/Open |
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