A5068291530- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Particle Detector Development and Performance
- Cosmology and Gravitation Theories
- Radiation Detection and Scintillator Technologies
- Quantum, superfluid, helium dynamics
- Nuclear Physics and Applications
- Astrophysics and Cosmic Phenomena
- Scientific Research and Discoveries
- Photocathodes and Microchannel Plates
- Radiation Therapy and Dosimetry
- Bladed Disk Vibration Dynamics
- Fatigue and fracture mechanics
- Cold Atom Physics and Bose-Einstein Condensates
- Structural Health Monitoring Techniques
- CCD and CMOS Imaging Sensors
- Astronomy and Astrophysical Research
- Superconducting Materials and Applications
- Quantum Chromodynamics and Particle Interactions
- Nuclear reactor physics and engineering
- Inorganic Fluorides and Related Compounds
- Vibration and Dynamic Analysis
- Gear and Bearing Dynamics Analysis
University of California, San Diego
2016-2025
Weizmann Institute of Science
2017-2024
Xenon Pharmaceuticals (Canada)
2023-2024
SAIC Motor (China)
2023-2024
Shanghai Jiao Tong University
2010-2023
University of Zurich
2023
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2023
Brookhaven National Laboratory
2021
Northeastern University
2020-2021
Perimeter Institute
2016
We report on a search for weakly interacting massive particles (WIMPs) using 278.8 days of data collected with the XENON1T experiment at LNGS. utilizes liquid xenon time projection chamber fiducial mass (1.30±0.01) ton, resulting in 1.0 ton yr exposure. The energy region interest, [1.4,10.6] keV_{ee} ([4.9,40.9] keV_{nr}), exhibits an ultralow electron recoil background rate [82_{-3}^{+5}(syst)±3(stat)] events/(ton keV_{ee}). No significant excess over is found, and profile likelihood...
We report on a search for particle dark matter with the XENON100 experiment, operated at Laboratori Nazionali del Gran Sasso 13 months during 2011 and 2012. features an ultralow electromagnetic background of (5.3 ± 0.6) × 10(-3) events/(keV(ee) kg day) in energy region interest. A blind analysis 224.6 live days 34 exposure has yielded no evidence interactions. The two candidate events observed predefined nuclear recoil range 6.6-30.5 keV(nr) are consistent expectation (1.0 0.2) events....
We report the first dark matter search results from XENON1T, a ∼2000-kg-target-mass dual-phase (liquid-gas) xenon time projection chamber in operation at Laboratori Nazionali del Gran Sasso Italy and ton-scale detector of this kind. The blinded used 34.2 live days data acquired between November 2016 January 2017. Inside (1042±12)-kg fiducial mass [5,40] keV_{nr} energy range interest for weakly interacting massive particle (WIMP) searches, electronic recoil background was (1.93±0.25)×10^{-4}...
We present results from the direct search for dark matter with XENON100 detector, installed underground at Laboratori Nazionali del Gran Sasso of INFN, Italy. is a two-phase time projection chamber 62 kg liquid xenon target. Interaction vertex reconstruction in three dimensions millimeter precision allows to select only innermost 48 as ultra-low background fiducial In 100.9 live days data, acquired between January and June 2010, no evidence found. Three candidate events were observed...
The XENON10 experiment at the Gran Sasso National Laboratory uses a 15 kg xenon dual phase time projection chamber (XeTPC) to search for dark matter weakly interacting massive particles (WIMPs). detector measures simultaneously scintillation and ionization produced by radiation in pure liquid xenon, discriminate signal from background down 4.5 keV nuclear recoil energy. A blind analysis of 58.6 live days data, acquired between October 6, 2006 February 14, 2007, using fiducial mass 5.4 kg,...
We report the WIMP dark matter search results using first physics-run data of PandaX-II 500 kg liquid xenon dual-phase time-projection chamber, operating at China JinPing Underground Laboratory. No candidate is identified above background. In combination with set during commissioning run, a total exposure 3.3$\times10^4$ kg-day,the most stringent limit to spin-independent interaction between ordinary and for range mass 3.5 1000 GeV/c$^2$. The best upper on scattering cross section found...
DARk matter WImp search with liquid xenoN (DARWIN) will be an experiment for the direct detection of dark using a multi-ton xenon time projection chamber at its core. Its primary goal to explore experimentally accessible parameter space Weakly Interacting Massive Particles (WIMPs) in wide mass-range, until neutrino interactions target become irreducible background. The prompt scintillation light and charge signals induced by particle observed VUV sensitive, ultra-low background photosensors....
We report results of a search for light (<10 GeV) particle dark matter with the XENON10 detector. The event trigger was sensitive to single electron, analysis threshold 5 electrons corresponding 1.4 keV nuclear recoil energy. Considering spin-independent matter-nucleon scattering, we exclude cross sections \sigma_n>3.5x10^{-42} cm^2, mass m_{\chi}=8 GeV. find that our data strongly constrain recent elastic interpretations excess low-energy events observed by CoGeNT and CRESST-II, as well...
We report results from searches for new physics with low-energy electronic recoil data recorded the XENON1T detector. With an exposure of 0.65 tonne-years and unprecedentedly low background rate 76±2stat events/(tonne×year×keV) between 1 30 keV, enable one most sensitive solar axions, enhanced neutrino magnetic moment using neutrinos, bosonic dark matter. An excess over known backgrounds is observed at energies prominent 2 3 keV. The axion model has a 3.4σ significance, three-dimensional 90%...
We report constraints on light dark matter (DM) models using ionization signals in the XENON1T experiment. mitigate backgrounds with strong event selections, rather than requiring a scintillation signal, leaving an effective exposure of (22±3) tonne day. Above ∼0.4 keV_{ee}, we observe <1 event/(tonne day keV_{ee}), which is more 1000 times lower similar searches other detectors. Despite observing higher rate at energies, no DM or CEvNS detection may be claimed because cannot model all our...
The XENON100 experiment, in operation at the Laboratori Nazionali del Gran Sasso Italy, is designed to search for dark matter WIMPs scattering off 62 kg of liquid xenon an ultra-low background dual-phase time projection chamber. In this letter, we present first results from analysis 11.17 live days non-blind data, acquired October and November 2009. selected fiducial target 40 kg, within pre-defined signal region, observe no events hence exclude spin-independent WIMP-nucleon elastic...
XENONnT is a dark matter direct detection experiment, utilizing 5.9 t of instrumented liquid xenon, located at the INFN Laboratori Nazionali del Gran Sasso. In this work, we predict experimental background and project sensitivity to weakly interacting massive particles (WIMPs). The expected average differential rate in energy region interest, corresponding (1, 13) keV (4, 50) for electronic nuclear recoils, amounts $12.3 \pm 0.6$ (keV y)$^{-1}$ $(2.2\pm 0.5)\times 10^{-3}$ y)$^{-1}$,...
We present new experimental constraints on the elastic, spin-dependent WIMP-nucleon cross section using recent data from XENON100 experiment, operated in Laboratori Nazionali del Gran Sasso Italy. An analysis of 224.6 live days×34 kg exposure acquired during 2011 and 2012 revealed no excess signal due to axial-vector WIMP interactions with 129Xe 131Xe nuclei. This leads most stringent upper limits WIMP-neutron sections for masses above 6 GeV/c², a minimum 3.5×10(-40) cm² at mass 45 90%...
The XENON1T experiment at the Laboratori Nazionali del Gran Sasso (LNGS) is first WIMP dark matter detector operating with a liquid xenon target mass above ton-scale. Out of its 3.2t inventory, 2.0t constitute active dual-phase time projection chamber. scintillation and ionization signals from particle interactions are detected low-background photomultipliers. This article describes instrument subsystems as well strategies to achieve an unprecedented low background level. First results on...
We report the first experimental results on spin-dependent elastic weakly interacting massive particle (WIMP) nucleon scattering from XENON1T dark matter search experiment. The analysis uses full ton year exposure of to constrain proton-only and neutron-only cases. No significant signal excess is observed, a profile likelihood ratio used set exclusion limits WIMP-nucleon interactions. This includes most stringent constraint date WIMP-neutron cross section, with minimum 6.3×10^{-42} cm^{2} at...
Direct dark matter detection experiments based on a liquid xenon target are leading the search for particles with masses above $\sim$ 5 GeV/c$^2$, but have limited sensitivity to lighter because of small momentum transfer in matter-nucleus elastic scattering. However, there is an irreducible contribution from inelastic processes accompanying scattering, which leads excitation and ionization recoiling atom (the Migdal effect) or emission Bremsstrahlung photon. In this letter, we report probe...
Delayed single- and few-electron emissions plague dual-phase time projection chambers, limiting their potential to search for light-mass dark matter. This paper examines the origins of these events in XENON1T experiment. Characterization intensity delayed electron backgrounds shows that resulting are correlated, position, with high-energy can effectively be vetoed. In this work we extend previous S2-only analyses down a single electron. From analysis, after removing correlated backgrounds,...
XENON10 is an experiment to directly detect weakly interacting massive particles (WIMPs), which may comprise the bulk of nonbaryonic dark matter in our Universe. We report new results for spin-dependent WIMP-nucleon interactions with $^{129}\mathrm{Xe}$ and $^{131}\mathrm{Xe}$ from 58.6 live days operation at Laboratori Nazionali del Gran Sasso. Based on nonobservation a WIMP signal 5.4 kg fiducial liquid xenon mass, we exclude previously unexplored regions theoretically allowed parameter...
We present the first results of searches for axions and axion-like-particles with XENON100 experiment. The axion-electron coupling constant, $g_{Ae}$, has been probed by exploiting axio-electric effect in liquid xenon. A profile likelihood analysis 224.6 live days $\times$ 34 kg exposure shown no evidence a signal. By rejecting larger than $7.7 \times 10^{-12}$ (90\% CL) solar axion search, we set best limit to date on this coupling. In frame DFSZ KSVZ models, exclude QCD heavier 0.3...
Many experiments that aim at the direct detection of Dark Matter are able to distinguish a dominant background from expected feeble signals, based on some measured discrimination parameter. We develop statistical model for such using Profile Likelihood ratio as test statistic in frequentist approach. take data calibrations control measurements signal and background, method allows inclusion Monte Carlo simulations. Systematic detector uncertainties, uncertainties energy scale, well...
We report on WIMP search results of the XENON100 experiment, combining three runs summing up to 477 live days from January 2010 2014. Data first two were already published. A blind analysis was applied last run recorded between April 2013 and 2014 prior results. The ultra-low electromagnetic background ~$5 \times 10^{-3}$ events/(keV$_{\mathrm{ee}}\times$kg$\times$day) before electronic recoil rejection, together with increased exposure 48 kg $\times$ yr improves sensitivity. profile...