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https://hdl.handle.net/10316/112202
Title: | Background determination for the LUX-ZEPLIN dark matter experiment | Authors: | Brás, P. Cabrita, R. Lindote, A. Lopes, M. I. Lopez-Asamar, E. Neves, F. Pereira, G. Porzio, D. Silva, C. Solovov, V. N. The LUX-ZEPLIN Collaboration |
Issue Date: | Jul-2023 | Publisher: | American Physical Society | Serial title, monograph or event: | Physical Review D | Volume: | 108 | Issue: | 1 | 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 ð6.3 0.5Þ × 10−5 events=keVee=kg=day in the low-energy region, approximately 60 times lower than the equivalent rate reported by the LUX experiment. | URI: | https://hdl.handle.net/10316/112202 | DOI: | 10.1103/PhysRevD.108.012010 | Rights: | openAccess |
Appears in Collections: | LIP - Artigos em Revistas Internacionais |
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File | Description | Size | Format | |
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Background-determination-for-the-LUXZEPLIN-dark-matter-experimentPhysical-Review-D.pdf | 2.5 MB | Adobe PDF | View/Open |
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