LZ reports a null result from 4.2 tonne-year exposure and sets new world-leading upper limits on spin-independent WIMP-nucleon cross sections reaching 2.2e-48 cm2 at 40 GeV.
LUX-ZEPLIN (LZ) Conceptual Design Report
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abstract
The design and performance of the LUX-ZEPLIN (LZ) detector is described as of March 2015 in this Conceptual Design Report. LZ is a second-generation dark-matter detector with the potential for unprecedented sensitivity to weakly interacting massive particles (WIMPs) of masses from a few GeV/c2 to hundreds of TeV/c2. With total liquid xenon mass of about 10 tonnes, LZ will be the most sensitive experiment for WIMPs in this mass region by the end of the decade. This report describes in detail the design of the LZ technical systems. Expected backgrounds are quantified and the performance of the experiment is presented. The LZ detector will be located at the Sanford Underground Research Facility in South Dakota. The organization of the LZ Project and a summary of the expected cost and current schedule are given.
representative citing papers
Dirac right-handed neutrinos in a U(1)_{B-L} Z' portal model produce observable ΔN_eff that, together with direct/indirect detection and collider bounds, carves out testable WIMP and FIMP dark-matter regions.
Sulphuric acid etches titanium, removing up to 3.5 mg/cm² in 24 hours at 40% concentration and 40°C, as a hydrofluoric acid alternative for radiopure applications.
citing papers explorer
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Dark Matter Search Results from 4.2 Tonne-Years of Exposure of the LUX-ZEPLIN (LZ) Experiment
LZ reports a null result from 4.2 tonne-year exposure and sets new world-leading upper limits on spin-independent WIMP-nucleon cross sections reaching 2.2e-48 cm2 at 40 GeV.
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$Z^\prime$ Portal Dark Matter with Observable $\Delta N_{\rm eff}$
Dirac right-handed neutrinos in a U(1)_{B-L} Z' portal model produce observable ΔN_eff that, together with direct/indirect detection and collider bounds, carves out testable WIMP and FIMP dark-matter regions.
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Hydrofluoric acid-free titanium etching for rare-event searches
Sulphuric acid etches titanium, removing up to 3.5 mg/cm² in 24 hours at 40% concentration and 40°C, as a hydrofluoric acid alternative for radiopure applications.