Publications (107)
An Effective Field Theory Analysis of the First LUX Dark Matter Search
D. S. Akerib, S. Alsum, H. M. Araújo +94
The Large Underground Xenon (LUX) dark matter search was a 250-kg active mass dual-phase time projection chamber that operated by detecting light and ionization signals from partic…
Kr calibration of the 2013 LUX dark matter search
LUX Collaboration, D. S. Akerib, S. Alsum +91
LUX was the first dark matter experiment to use a Kr calibration source. In this paper we describe the source preparation and injection. We also present several $^…
Projected WIMP sensitivity of the LUX-ZEPLIN (LZ) dark matter experiment
D. S. Akerib, C. W. Akerlof, S. K. Alsum +175
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, So…
Results of a Search for Sub-GeV Dark Matter Using 2013 LUX Data
D. S. Akerib, S. Alsum, H. M. Araújo +95
The scattering of dark matter (DM) particles with sub-GeV masses off nuclei is difficult to detect using liquid xenon-based DM search instruments because the energy transfer during…
Results from the First Science Run of the ZEPLIN-III Dark Matter Search Experiment
V. N. Lebedenko, H. M. Araujo, E. J. Barnes +35
The ZEPLIN-III experiment in the Palmer Underground Laboratory at Boulby uses a 12kg two-phase xenon time projection chamber to search for the weakly interacting massive particles…
Background Determination for the LUX-ZEPLIN (LZ) Dark Matter Experiment
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +200
The LUX-ZEPLIN experiment recently reported limits on WIMP-nucleus interactions from its initial science run, down to cm for the spin-independent interactio…
Limits on the spin-dependent WIMP-nucleon cross-sections from the first science run of the ZEPLIN-III experiment
V. N. Lebedenko, H. M. Araujo, E. J. Barnes +36
We present new experimental constraints on the WIMP-nucleon spin-dependent elastic cross-sections using data from the first science run of ZEPLIN-III, a two-phase xenon experiment…
LUX-ZEPLIN (LZ) Technical Design Report
B. J. Mount, S. Hans, R. Rosero +259
In this Technical Design Report (TDR) we describe the LZ detector to be built at the Sanford Underground Research Facility (SURF). The LZ dark matter experiment is designed to achi…
Projected sensitivity of the LUX-ZEPLIN experiment to the decay of Xe
D. S. Akerib, C. W. Akerlof, A. Alqahtani +189
The LUX-ZEPLIN (LZ) experiment will enable a neutrinoless double beta decay search in parallel to the main science goal of discovering dark matter particle interactions. We report…
The Data Acquisition System of the LZ Dark Matter Detector: FADR
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +213
The Data Acquisition System (DAQ) for the LUX-ZEPLIN (LZ) dark matter detector is described. The signals from 745 PMTs, distributed across three subsystems, are sampled with 100-MH…
Search for New Physics via Low-Energy Electron Recoils with a 4.2 Tonne\times Year Exposure from the LZ Experiment
D. S. Akerib, A. K. Al Musalhi, F. Alder +207
We report results from searches for new physics models through electron recoils using data collected by the LUX-ZEPLIN (LZ) experiment during its first two science runs, with a tot…
Technical Results from the Surface Run of the LUX Dark Matter Experiment
LUX Collaboration, D. S. Akerib, X. Bai +64
We present the results of the three-month above-ground commissioning run of the Large Underground Xenon (LUX) experiment at the Sanford Underground Research Facility located in Lea…
The ZEPLIN-III dark matter detector: instrument design, manufacture and commissioning
D. Yu. Akimov, G. J. Alner, H. M. Araujo +56
We present details of the technical design and manufacture of the ZEPLIN-III dark matter experiment. ZEPLIN-III is a two-phase xenon detector which measures both the scintillation…
A machine learning-based methodology for pulse classification in dual-phase xenon time projection chambers
P. Brás, F. Neves, A. Lindote +7
Machine learning techniques are now well established in experimental particle physics, allowing detector data to be analysed in new and unique ways. The identification of signals i…
Chromatographic separation of radioactive noble gases from xenon
LUX Collaboration, D. S. Akerib, H. M. Araújo +96
The Large Underground Xenon (LUX) experiment operates at the Sanford Underground Research Facility to detect nuclear recoils from the hypothetical Weakly Interacting Massive Partic…
Discrimination of electronic recoils from nuclear recoils in two-phase xenon time projection chambers
LUX Collaboration, D. S. Akerib, S. Alsum +94
We present a comprehensive analysis of electronic recoil vs. nuclear recoil discrimination in liquid/gas xenon time projection chambers, using calibration data from the 2013 and 20…
A model of the reflection distribution in the vacuum ultra violet region
C. Silva, J. Pinto da Cunha, A. Pereira +4
A reflection model with three components, a specular spike, a specular lobe and a diffuse lobe is discussed. This model was successfully applied to describe reflection of xenon sci…
Calibration of Photomultiplier Arrays
F. Neves, V. Chepel, D. Yu. Akimov +31
A method is described that allows calibration and assessment of the linearity of response of an array of photomultiplier tubes. The method does not require knowledge of the photomu…
Pushing the Limits of Pulse Shape Discrimination in a Large Liquid Xenon Detector
D. S. Akerib, A. K. Al Musalhi, F. Alder +208
The LUX-ZEPLIN (LZ) experiment is a direct-detection dark matter experiment, optimized to search for weakly interacting massive particles (WIMPs) through WIMP-nucleon interactions.…
Flow-dependent tagging of Pb decays in the LZ dark matter detector
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +205
The LUX-ZEPLIN (LZ) experiment is searching for dark matter interactions in a liquid xenon time projection chamber (LXe-TPC). This article demonstrates how control of the flow stat…
A Detailed Look at the First Results from the Large Underground Xenon (LUX) Dark Matter Experiment
M. Szydagis, D. S. Akerib, H. M. Araujo +77
LUX, the world's largest dual-phase xenon time-projection chamber, with a fiducial target mass of 118 kg and 10,091 kg-days of exposure thus far, is currently the most sensitive di…
Two-neutrino double electron capture of Xe in the first LUX-ZEPLIN exposure
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +202
The broad physics reach of the LUX-ZEPLIN (LZ) experiment covers rare phenomena beyond the direct detection of dark matter. We report precise measurements of the extremely rare dec…
A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
J. Aalbers, K. Abe, V. Aerne +591
The nature of dark matter and properties of neutrinos are among the most pressing issues in contemporary particle physics. The dual-phase xenon time-projection chamber is the leadi…
Simulations of Events for the LUX-ZEPLIN (LZ) Dark Matter Experiment
ZEPLIN Collaboration, D. S. Akerib, C. W. Akerlof +194
The LUX-ZEPLIN dark matter search aims to achieve a sensitivity to the WIMP-nucleon spin-independent cross-section down to (1--2)\,pb at a WIMP mass of 40 GeV/…
3D Modeling of Electric Fields in the LUX Detector
LUX Collaboration, D. S. Akerib, S. Alsum +91
This work details the development of a three-dimensional (3D) electric field model for the LUX detector. The detector took data during two periods of searching for weakly interacti…
Position Reconstruction in a Dual Phase Xenon Scintillation Detector
V. N. Solovov, V. A. Belov, D. Yu. Akimov +33
We studied the application of statistical reconstruction algorithms, namely maximum likelihood and least squares methods, to the problem of event reconstruction in a dual phase liq…
The Large Underground Xenon (LUX) Experiment
D. S. Akerib, X. Bai, S. Bedikian +91
The Large Underground Xenon (LUX) collaboration has designed and constructed a dual-phase xenon detector, in order to conduct a search for Weakly Interacting Massive Particles(WIMP…
Transforming a rare event search into a not-so-rare event search in real-time with deep learning-based object detection
J. Schueler, H. M. Araújo, S. N. Balashov +40
Deep learning-based object detection algorithms enable the simultaneous classification and localization of any number of objects in image data. Many of these algorithms are capable…
Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX data
LUX Collaboration, D. S. Akerib, H. M. Araújo +99
We present constraints on weakly interacting massive particles (WIMP)-nucleus scattering from the 2013 data of the Large Underground Xenon dark matter experiment, including $1.4\ti…
Signal yields, energy resolution, and recombination fluctuations in liquid xenon
D. S. Akerib, S. Alsum, H. M. Araújo +98
This work presents an analysis of monoenergetic electronic recoil peaks in the dark-matter-search and calibration data from the first underground science run of the Large Undergrou…
The LUX-ZEPLIN (LZ) Experiment
The LZ Collaboration, D. S. Akerib, C. W. Akerlof +379
We describe the design and assembly of the LUX-ZEPLIN experiment, a direct detection search for cosmic WIMP dark matter particles. The centerpiece of the experiment is a large liqu…
WIMP-nucleon cross-section results from the second science run of ZEPLIN-III
D. Yu. Akimov, H. M. Araujo, E. J. Barnes +34
We report experimental upper limits on WIMP-nucleon elastic scattering cross sections from the second science run of ZEPLIN-III at the Boulby Underground Laboratory. A raw fiducial…
First limits on WIMP nuclear recoil signals in ZEPLIN-II: a two phase xenon detector for dark matter detection
G. J. Alner, H. M. Araujo, A. Bewick +58
Results are presented from the first underground data run of ZEPLIN-II, a 31 kg two phase xenon detector developed to observe nuclear recoils from hypothetical weakly interacting m…
Iterative reconstruction of the detector response for medical gamma cameras
A. Morozov, V. Solovov, F. Alves +4
Statistical event reconstruction techniques can give better results for gamma cameras than the traditional centroid method. However, implementation of such techniques requires deta…
Extending light WIMP searches to single scintillation photons in LUX
D. S. Akerib, S. Alsum, H. M. Araújo +122
We present a novel analysis technique for liquid xenon time projection chambers that allows for a lower threshold by relying on events with a prompt scintillation signal consisting…
Neutrinoless Double Beta Decay Sensitivity of the XLZD Rare Event Observatory
XLZD Collaboration, J. Aalbers, K. Abe +441
The XLZD collaboration is developing a two-phase xenon time projection chamber with an active mass of 60 to 80 t capable of probing the remaining WIMP-nucleon interaction parameter…
First Constraints on WIMP-Nucleon Effective Field Theory Couplings in an Extended Energy Region From LUX-ZEPLIN
LZ Collaboration, J. Aalbers, D. S. Akerib +197
Following the first science results of the LUX-ZEPLIN (LZ) experiment, a dual-phase xenon time projection chamber operating from the Sanford Underground Research Facility in Lead,…
Improved Modeling of Electronic Recoils in Liquid Xenon Using LUX Calibration Data
The LUX Collaboration, D. S. Akerib, S. Alsum +96
We report here methods and techniques for creating and improving a model that reproduces the scintillation and ionization response of a dual-phase liquid and gaseous xenon time-pro…
Measurements and models of enhanced recombination following inner-shell vacancies in liquid xenon
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +215
Electron-capture decays of Xe and Xe, and double-electron-capture decays of Xe, are backgrounds in searches for weakly interacting massive particles (WIMPs)…
Searches for Light Dark Matter and Evidence of Coherent Elastic Neutrino-Nucleus Scattering of Solar Neutrinos with the LUX-ZEPLIN (LZ) Experiment
D. S. Akerib, A. K. Al Musalhi, F. Alder +217
We present searches for light dark matter (DM) with masses 3-9 GeV/ in the presence of coherent elastic neutrino-nucleus scattering (CENS) from B solar neutrinos wit…
Fast and Flexible Analysis of Direct Dark Matter Search Data with Machine Learning
LUX Collaboration, D. S. Akerib, S. Alsum +97
We present the results from combining machine learning with the profile likelihood fit procedure, using data from the Large Underground Xenon (LUX) dark matter experiment. This app…
Improved Measurements of the \b{eta}-Decay Response of Liquid Xenon with the LUX Detector
D. S. Akerib, S. Alsum, H. M. Araújo +98
We report results from an extensive set of measurements of the \b{eta}-decay response in liquid xenon.These measurements are derived from high-statistics calibration data from inje…
Results on the Spin-Dependent Scattering of Weakly Interacting Massive Particles on Nucleons from the Run 3 Data of the LUX Experiment
LUX Collaboration, D. S. Akerib, H. M. Araújo +99
We present the first experimental constraints on the spin-dependent WIMP-nucleon elastic cross sections from LUX data acquired in 2013. LUX is a dual-phase xenon time projection ch…
Cosmogenic production of Ar in the context of the LUX-ZEPLIN experiment
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +205
We estimate the amount of Ar produced in natural xenon via cosmic ray-induced spallation, an inevitable consequence of the transportation and storage of xenon on the Earth's…
The ZEPLIN-III Anti-Coincidence Veto Detector
D. Yu. Akimov, H. M. Araujo, E. J. Barnes +34
The design, optimisation and construction of an anti-coincidence veto detector to complement the ZEPLIN-III direct dark matter search instrument is described. One tonne of plastic…
Constraints On Covariant WIMP-Nucleon Effective Field Theory Interactions from the First Science Run of the LUX-ZEPLIN Experiment
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +201
The first science run of the LUX-ZEPLIN (LZ) experiment, a dual-phase xenon time project chamber operating in the Sanford Underground Research Facility in South Dakota, USA, has re…
Identification of Radiopure Titanium for the LZ Dark Matter Experiment and Future Rare Event Searches
D. S. Akerib, C. W. Akerlof, D. Yu. Akimov +202
The LUX-ZEPLIN (LZ) experiment will search for dark matter particle interactions with a detector containing a total of 10 tonnes of liquid xenon within a double-vessel cryostat. Th…
Performance of a Chamber for Studying the Liquid Xenon Response to Nuclear Recoils
V. Chepel, F. Neves, V. Solovov +8
The design and performance of a 1.2 liter liquid xenon chamber equipped with 7 two-inch photomultiplier tubes, with the purpose of studying the scintillation response of xenon to g…
LUX Trigger Efficiency
D. S. Akerib, S. Alsum, H. M. Araújo +94
The Large Underground Xenon experiment (LUX) searches for dark matter using a dual-phase xenon detector. LUX uses a custom-developed trigger system for event selection. In this pap…
Tritium calibration of the LUX dark matter experiment
LUX Collaboration, D. S. Akerib, H. M. Araújo +98
We present measurements of the electron-recoil (ER) response of the LUX dark matter detector based upon 170,000 highly pure and spatially-uniform tritium decays. We reconstruct the…
The Design, Implementation, and Performance of the LZ Calibration Systems
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +200
LUX-ZEPLIN (LZ) is a tonne-scale experiment searching for direct dark matter interactions and other rare events. It is located at the Sanford Underground Research Facility (SURF) i…
First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment
J. Aalbers, D. S. Akerib, C. W. Akerlof +344
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 Dak…
Low-energy (0.7-74 keV) nuclear recoil calibration of the LUX dark matter experiment using D-D neutron scattering kinematics
LUX Collaboration, D. S. Akerib, S. Alsum +104
The Large Underground Xenon (LUX) experiment is a dual-phase liquid xenon time projection chamber (TPC) operating at the Sanford Underground Research Facility in Lead, South Dakota…
FPGA-based Trigger System for the LUX Dark Matter Experiment
D. S. Akerib, H. M. Araujo, X. Bai +100
LUX is a two-phase (liquid/gas) xenon time projection chamber designed to detect nuclear recoils resulting from interactions with dark matter particles. Signals from the detector a…
First direct detection constraint on mirror dark matter kinetic mixing using LUX 2013 data
LUX Collaboration, D. S. Akerib, S. Alsum +97
We present the results of a direct detection search for mirror dark matter interactions, using data collected from the Large Underground Xenon experiment during 2013, with an expos…
Enhancing the sensitivity of the LUX-ZEPLIN (LZ) dark matter experiment to low energy signals
D. S. Akerib, A. K. Al Musalhi, S. K. Alsum +184
Two-phase xenon detectors, such as that at the core of the forthcoming LZ dark matter experiment, use photomultiplier tubes to sense the primary (S1) and secondary (S2) scintillati…
Liquid xenon scintillation measurements and pulse shape discrimination in the LUX dark matter detector
The LUX Collaboration, D. S. Akerib, S. Alsum +90
Weakly Interacting Massive Particles (WIMPs) are a leading candidate for dark matter and are expected to produce nuclear recoil (NR) events within liquid xenon time-projection cham…
Measurement and simulation of the muon-induced neutron yield in lead
L. Reichhart, A. Lindote, D. Yu. Akimov +36
A measurement is presented of the neutron production rate in lead by high energy cosmic-ray muons at a depth of 2850 m water equivalent (w.e.) and a mean muon energy of 260 GeV. Th…
Limits on inelastic dark matter from ZEPLIN-III
D. Yu. Akimov, H. M. Araujo, E. J. Barnes +43
We present limits on the WIMP-nucleon cross section for inelastic dark matter derived from the 2008 run of ZEPLIN-III. Cuts, notably on scintillation pulse shape and scintillation-…
Projected sensitivity of the LUX-ZEPLIN (LZ) experiment to the two-neutrino and neutrinoless double beta decays of Xe
The LUX-ZEPLIN, Collaboration, : +194
The projected sensitivity of the LUX-ZEPLIN (LZ) experiment to two-neutrino and neutrinoless double beta decay of Xe is presented. LZ is a 10-tonne xenon time projection ch…
Performance data from the ZEPLIN-III second science run
P. Majewski, V. N. Solovov, D. Yu. Akimov +32
ZEPLIN-III is a two-phase xenon direct dark matter experiment located at the Boulby Mine (UK). After its first science run in 2008 it was upgraded with: an array of low background…
Investigation of background electron emission in the LUX detector
D. S. Akerib, S. Alsum, H. M. Araújo +93
Dual-phase xenon detectors, as currently used in direct detection dark matter experiments, have observed elevated rates of background electron events in the low energy region. Whil…
Constraints on Effective Field Theory Couplings Using 311.2 days of LUX Data
D. S. Akerib, S. Alsum, H. M. Araújo +94
We report here the results of an Effective Field Theory (EFT) WIMP search analysis using LUX data. We build upon previous LUX analyses by extending the search window to include nuc…
New constraints on ultraheavy dark matter from the LZ experiment
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +196
Searches for dark matter with liquid xenon time projection chamber experiments have traditionally focused on the region of the parameter space that is characteristic of weakly inte…
The ZEPLIN-III dark matter detector: performance study using an end-to-end simulation tool
H. M. Araujo, D. Yu. Akimov, G. J. Alner +53
We present results from a GEANT4-based Monte Carlo tool for end-to-end simulations of the ZEPLIN-III dark matter experiment. ZEPLIN-III is a two-phase detector which measures both…
Projected sensitivities of the LUX-ZEPLIN (LZ) experiment to new physics via low-energy electron recoils
The LZ Collaboration, D. S. Akerib, A. K. Al Musalhi +194
LUX-ZEPLIN (LZ) is a dark matter detector expected to obtain world-leading sensitivity to weakly interacting massive particles (WIMPs) interacting via nuclear recoils with a ~7-ton…
Measurement of the Muon Flux at the Sanford Underground Research Facility with the LUX-ZEPLIN Dark Matter Detector
D. S. Akerib, A. K. Al Musalhi, F. Alder +209
High-energy cosmic-ray muons reaching deep underground laboratories can cause events in detectors that mimic signals expected from dark matter particles, neutrinos, or rare decays.…
An Ultra-Low Background PMT for Liquid Xenon Detectors
D. S. Akerib, X. Bai, E. Bernard +64
Results are presented from radioactivity screening of two models of photomultiplier tubes designed for use in current and future liquid xenon experiments. The Hamamatsu 5.6 cm diam…
First results from the LUX dark matter experiment at the Sanford Underground Research Facility
LUX Collaboration, D. S. Akerib, H. M. Araujo +100
The Large Underground Xenon (LUX) experiment, a dual-phase xenon time-projection chamber operating at the Sanford Underground Research Facility (Lead, South Dakota), was cooled and…
Low-Energy Radon Backgrounds from Electrode Grids in Dual-Phase Xenon TPCs
D. S. Akerib, A. K. Al Musalhi, F. Alder +264
The dual-phase xenon time projection chamber (TPC) is a powerful technology to detect rare interactions such as scatters of dark matter particles on nuclei. In particular, the buil…
Ultra-Low Energy Calibration of LUX Detector using Xe Electron Capture
LUX Collaboration, D. S. Akerib, S. Alsum +91
We report an absolute calibration of the ionization yields($\textit{Q$_y$})$ and fluctuations for electronic recoil events in liquid xenon at discrete energies between 186 eV and 3…
Search for two neutrino double electron capture of Xe and Xe in the full exposure of the LUX detector
LUX Collaboration, D. S. Akerib, S. Alsum +96
Two-neutrino double electron capture is a process allowed in the Standard Model of Particle Physics. This rare decay has been observed in Kr, Ba and more recently in…
Calibration, event reconstruction, data analysis and limits calculation for the LUX dark matter experiment
D. S. Akerib, S. Alsum, H. M. Araújo +95
The LUX experiment has performed searches for dark matter particles scattering elastically on xenon nuclei, leading to stringent upper limits on the nuclear scattering cross sectio…
Quenching Factor for Low Energy Nuclear Recoils in a Plastic Scintillator
L. Reichhart, D. Yu. Akimov, H. M. Araujo +34
Plastic scintillators are widely used in industry, medicine and scientific research, including nuclear and particle physics. Although one of their most common applications is in ne…
Scintillation efficiency of liquid xenon for nuclear recoils with the energy down to 5 keV
V. Chepel, V. Solovov, F. Neves +7
The scintillation efficiency of liquid xenon for nuclear recoils has been measured to be nearly constant in the recoil energy range from 140 keV down to 5 keV. The average ratio of…
Study of few-electron backgrounds in the LUX-ZEPLIN detector
D. S. Akerib, A. K. Al Musalhi, F. Alder +204
The LUX-ZEPLIN (LZ) experiment aims to detect rare interactions between dark matter particles and xenon. Although the detector is designed to be the most sensitive to GeV/--Te…
Low-energy nuclear recoil calibration of the LUX-ZEPLIN experiment with a photoneutron source
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +206
The LZ experiment is a liquid xenon time-projection chamber (TPC) searching for evidence of particle dark matter interactions. In the simplest assumption of elastic scattering, man…
ZE3RA: The ZEPLIN-III Reduction and Analysis Package
F. Neves, D. Yu. Akimov, H. M. Araújo +34
ZE3RA is the software package responsible for processing the raw data from the ZEPLIN-III dark matter experiment and its reduction into a set of parameters used in all subsequent a…
After LUX: The LZ Program
D. C. Malling, D. S. Akerib, H. M. Araujo +71
The LZ program consists of two stages of direct dark matter searches using liquid Xe detectors. The first stage will be a 1.5-3 tonne detector, while the last stage will be a 20 to…
Improving sensitivity to low-mass dark matter in LUX using a novel electrode background mitigation technique
LUX Collaboration, D. S. Akerib, S. Alsum +95
This paper presents a novel technique for mitigating electrode backgrounds that limit the sensitivity of searches for low-mass dark matter (DM) using xenon time projection chambers…
Measurement of the Gamma Ray Background in the Davis Cavern at the Sanford Underground Research Facility
D. S. Akerib, C. W. Akerlof, S. K. Alsum +164
Deep underground environments are ideal for low background searches due to the attenuation of cosmic rays by passage through the earth. However, they are affected by backgrounds fr…
Nuclear recoil scintillation and ionisation yields in liquid xenon from ZEPLIN-III data
M. Horn, V. A. Belov, D. Yu. Akimov +33
Scintillation and ionisation yields for nuclear recoils in liquid xenon above 10 keVnr (nuclear recoil energy) are deduced from data acquired using broadband Am-Be neutron sources.…
Dark Matter Search Results from 4.2 Tonne-Years of Exposure of the LUX-ZEPLIN (LZ) Experiment
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +215
We report results of a search for nuclear recoils induced by weakly interacting massive particle (WIMP) dark matter using the LUX-ZEPLIN (LZ) two-phase xenon time projection chambe…
Overlap-aware segmentation for topological reconstruction of obscured objects
J. Schueler, H. M. Araújo, S. N. Balashov +30
The separation of overlapping objects presents a significant challenge in scientific imaging. While deep learning segmentation-regression algorithms can predict pixel-wise intensit…
ANTS2 package: simulation and experimental data processing for Anger camera type detectors
A. Morozov, V. Solovov, R. Martins +3
ANTS2 is a simulation and data processing package developed for position sensitive detectors with Anger camera type readout. The simulation module of ANTS2 is based on ROOT package…
First Searches for Axions and Axion-Like Particles with the LUX Experiment
D. S. Akerib, S. Alsum, C. Aquino +98
The first searches for axions and axion-like particles with the Large Underground Xenon (LUX) experiment are presented. Under the assumption of an axio-electric interaction in xeno…
New constraints on cosmic ray-boosted dark matter from the LUX-ZEPLIN experiment
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +201
While dual-phase xenon time projection chambers (TPCs) have driven the sensitivity towards weakly interacting massive particles (WIMPs) at the GeV/c^2 to TeV/c^2 mass scale, the sc…
LUX-ZEPLIN (LZ) Conceptual Design Report
The LZ Collaboration, D. S. Akerib, C. W. Akerlof +192
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 p…
Probing the Scalar WIMP-Pion Coupling with the first LUX-ZEPLIN data
J. Aalbers, D. S. Akerib, A. K. Al Musalhi +200
Weakly interacting massive particles (WIMPs) may interact with a virtual pion that is exchanged between nucleons. This interaction channel is important to consider in models where…
A search for new physics in low-energy electron recoils from the first LZ exposure
The LZ Collaboration, J. Aalbers, D. S. Akerib +200
The LUX-ZEPLIN (LZ) experiment is a dark matter detector centered on a dual-phase xenon time projection chamber. We report searches for new physics appearing through few-keV-scale…
Nuclear Recoil Calibration at Sub-keV Energies in LUX and Its Impact on Dark Matter Search Sensitivity
LUX Collaboration, D. S. Akerib, S. Alsum +94
Dual-phase xenon time projection chamber (TPC) detectors offer heightened sensitivities for dark matter detection across a spectrum of particle masses. To broaden their capability…
Limits on spin-dependent WIMP-nucleon cross section obtained from the complete LUX exposure
LUX Collaboration, D. S. Akerib, S. Alsum +97
We present experimental constraints on the spin-dependent WIMP-nucleon elastic cross sections from the total 129.5 kg-year exposure acquired by the Large Underground Xenon experime…
Measurement and analysis of the Am-243 neutron capture cross section at the n_TOF facility at CERN
TOF Collaboration, E. Mendoza, D. Cano-Ott +129
Background:The design of new nuclear reactors and transmutation devices requires to reduce the present neutron cross section uncertainties of minor actinides. Purpose: Reduce the $…
The XLZD Design Book: Towards the Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
XLZD Collaboration, J. Aalbers, K. Abe +441
This report describes the experimental strategy and technologies for XLZD, the next-generation xenon observatory sensitive to dark matter and neutrino physics. In the baseline desi…
Measurement of single electron emission in two-phase xenon
B. Edwards, H. M. Araujo, V. Chepel +25
We present the first measurements of the electroluminescence response to the emission of single electrons in a two-phase noble gas detector. Single ionization electrons generated i…
Single electron emission in two-phase xenon with application to the detection of coherent neutrino-nucleus scattering
E. Santos, B. Edwards, V. Chepel +34
We present an experimental study of single electron emission in ZEPLIN-III, a two-phase xenon experiment built to search for dark matter WIMPs, and discuss applications enabled by…
Position Reconstruction in LUX
LUX Collaboration, D. S. Akerib, S. Alsum +91
The position reconstruction method used in the analysis of the complete exposure of the Large Underground Xenon (LUX) experiment is presented. The algorithm is based on a…
Low Temperature Performance of a Large Area Avalanche Photodiode
V. N. Solovov, F. Neves, V. Chepel +3
A Large Area Avalanche Photodiode (LAAPD) was studied, aiming to access its performance as light detector at low temperatures, down to -80 C. The excess noise factor, F, was measur…
Measurement of the absolute reflectance of polytetrafluoroethylene (PTFE) immersed in liquid xenon
F. Neves, A. Lindote, A. Morozov +5
The performance of a detector using liquid xenon (LXe) as a scintillator is strongly dependent on the collection efficiency for xenon scintillation light, which in turn is critical…
The MIGDAL experiment: Measuring a rare atomic process to aid the search for dark matter
H. M. Araújo, S. N. Balashov, J. E. Borg +33
We present the Migdal In Galactic Dark mAtter expLoration (MIGDAL) experiment aiming at the unambiguous observation and study of the so-called Migdal effect induced by fast-neutron…