期刊
PHYSICAL REVIEW D
卷 101, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.101.052002
关键词
-
资金
- U.S. Department of Energy, Office of Science, Office of High Energy Physics [DE-AC02-05CH11231, DE-SC0020216, DE-SC0012704, DE-SC0010010, DE-AC02-07CH11359, DE-SC0012161, DE-SC0014223, DE-FG02-13ER42020, DE-SC0009999, DE-NA0003180]
- U.S. National Science Foundation (NSF)
- U.K. Science AMP
- Technology Facilities Council [ST/M003655/1, ST/M003981/1, ST/M003744/1, ST/M003639/1, ST/M003604/1, ST/M003469/1]
- Portuguese Foundation for Science and Technology (FCT) [PTDC/FIS-PAR/28567/2017]
- Institute for Basic Science, Korea [IBS-R016-D1]
- U.K. Royal Society under the International Exchange Scheme [IE141517]
- Boulby Underground Laboratory in the U.K.
- GridPP Collaboration (Imperial College London) [99,100]
- University College London (UCL) Cosmoparticle Initiative
- Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
- [DE-SC0011702]
- [DESC0010072]
- [DE-SC0015708]
- [DE-SC0006605]
- [DE-FG0210ER46709]
- [UW PRJ82AJ]
- [DE-SC0013542]
- [DE-AC02-76SF00515]
- [DE-SC0019066]
- [DE-AC52-07NA27344]
- [DOE-SC0012447]
- U.S. Department of Energy (DOE) [DE-SC0012161] Funding Source: U.S. Department of Energy (DOE)
- STFC [ST/P00377X/1, ST/S000747/1, ST/N000447/1, Lux Zeplin, ST/N000242/1, ST/N000277/1, ST/M003744/1, ST/M003655/1, ST/R003181/1, ST/M003469/1, ST/M003639/1, ST/M003981/1, ST/M003604/1, 1811350] Funding Source: UKRI
- Fundação para a Ciência e a Tecnologia [PTDC/FIS-PAR/28567/2017] Funding Source: FCT
LUX-ZEPLIN (LZ) is a next-generation dark matter direct detection experiment that will operate 4850 feet underground at the Sanford Underground Research Facility (SURF) in Lead, South Dakota, USA. Using a two-phase xenon detector with an active mass of 7 tonnes, LZ will search primarily for low-energy interactions with weakly interacting massive particles (WIMPs), which are hypothesized to make up the dark matter in our galactic halo. In this paper, the projected WIMP sensitivity of LZ is presented based on the latest background estimates and simulations of the detector. For a 1000 live day run using a 5.6-tonne fiducial mass, LZ is projected to exclude at 90% confidence level spin-independent WIMP-nucleon cross sections above 1.4 x 10(-48) cm(2) for a 40 GeV/c(2) mass WIMP. Additionally, a 5 sigma discovery potential is projected, reaching cross sections below the exclusion limits of recent experiments. For spin-dependent WIMP-neutron(-proton) scattering, a sensitivity of 2.3 x 10(-43) cm(2) (7.1 x 10(-42) cm(2)) for a 40 GeV/c(2) mass WIMP is expected. With underground installation well underway, LZ is on track for commissioning at SURF in 2020.
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