P. A. Breur
A5037194424- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Neutrino Physics Research
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Cosmology and Gravitation Theories
- Quantum, superfluid, helium dynamics
- Radioactive contamination and transfer
- Radioactive Decay and Measurement Techniques
- Radioactivity and Radon Measurements
- Atmospheric Ozone and Climate
- Nuclear Physics and Applications
- CCD and CMOS Imaging Sensors
- Quantum Chromodynamics and Particle Interactions
- Respiratory Support and Mechanisms
- Advanced NMR Techniques and Applications
- High-Energy Particle Collisions Research
- Cardiac Arrest and Resuscitation
- Quantum Electrodynamics and Casimir Effect
- Advanced Optical Sensing Technologies
- Astrophysics and Cosmic Phenomena
- Optical measurement and interference techniques
- Quantum Mechanics and Applications
- Pulsars and Gravitational Waves Research
SLAC National Accelerator Laboratory
2020-2024
University of Amsterdam
2015-2023
National Institute for Subatomic Physics
2009-2023
Stanford University
2023
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 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}...
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....
The XENON1T experiment is currently in the commissioning phase at Laboratori Nazionali del Gran Sasso, Italy. In this article we study experiment's expected sensitivity to spin-independent WIMP-nucleon interaction cross section, based on Monte Carlo predictions of electronic and nuclear recoil backgrounds. total background $1$ tonne fiducial volume ($1$, $12$) keV equivalent energy region, before applying any selection discriminate between recoils, $(1.80 \pm 0.15) \cdot 10^{-4}$ ($\rm{kg}...
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 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...
The nature of dark matter and properties neutrinos are among the most pressing issues in contemporary particle physics. dual-phase xenon time-projection chamber is leading technology to cover available parameter space for Weakly Interacting Massive Particles (WIMPs), while featuring extensive sensitivity many alternative candidates. These detectors can also study through neutrinoless double-beta decay a variety astrophysical sources. A next-generation xenon-based detector will therefore be...
This paper introduces the neutrinoless double-beta decay (the rarest nuclear weak process) and describes status of research for this transition, both from point view theoretical physics in terms present future experimental scenarios. Implications phenomenon on crucial aspects particle are briefly discussed. The calculations matrix elements case mass mechanisms reviewed, a range these quantities is proposed most appealing candidates. After introducing general concepts—such as choice best...
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...
We perform a low-mass dark matter search using an exposure of $30\text{ }\text{ }\mathrm{kg}\ifmmode\times\else\texttimes\fi{}\mathrm{yr}$ with the XENON100 detector. By dropping requirement scintillation signal and only ionization to determine interaction energy, we lowered energy threshold for detection 0.7 keV nuclear recoils. No can be claimed because complete background model cannot constructed without primary signal. Instead, compute upper limit on WIMP-nucleon scattering cross section...
Abstract The nEXO neutrinoless double beta (0 νββ ) decay experiment is designed to use a time projection chamber and 5000 kg of isotopically enriched liquid xenon search for the in 136 Xe. Progress detector design, paired with higher fidelity its simulation an advanced data analysis, based on one used final results EXO-200, produce sensitivity prediction that exceeds half-life 10 28 years. Specifically, improvements have been made understanding production scintillation photons charge as...
The XENON1T experiment searches for dark matter particles through their scattering off xenon atoms in a 2 tonne liquid target. detector is dual-phase time projection chamber, which measures simultaneously the scintillation and ionization signals produced by interactions target volume, to reconstruct energy position, as well type of interaction. background rate central volume lowest achieved so far with xenon-based direct detection experiment. In this work we describe response model detector,...
We report on a search for electronic recoil event rate modulation signatures in the XENON100 data accumulated over period of 4 years, from January 2010 to 2014. A profile likelihood method, which incorporates stability detector and known background model, is used quantify significance periodicity time distribution events. There weak signature at $431^{+16}_{-14}$ days low energy region $(2.0-5.8)$ keV single scatter sample, with global $1.9\,\sigma$, however no other more significant...
The XENON1T experiment at the Laboratori Nazionali del Gran Sasso is most sensitive direct detection for dark matter in form of weakly interacting particles (WIMPs) with masses above $6\text{ }\text{ }\mathrm{GeV}/{c}^{2}$ scattering off nuclei. detector employs a dual-phase time projection chamber 2.0 metric tons liquid xenon target. A one $\text{metric}\text{ }\text{ton}\ifmmode\times\else\texttimes\fi{}\mathrm{year}$ exposure science data was collected between October 2016 and February...
Abstract Xenon dual-phase time projection chambers designed to search for weakly interacting massive particles have so far shown a relative energy resolution which degrades with above $$\sim $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mo>∼</mml:mo></mml:math> 200 keV due the saturation effects. This has limited their sensitivity in rare events like neutrinoless double-beta decay of $$^{136} \hbox {Xe}$$...
Abstract The DARWIN observatory is a proposed next-generation experiment to search for particle dark matter and the neutrinoless double beta decay of $$^{136}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>136</mml:mn> </mml:msup> </mml:math> Xe. Out its 50 t total natural xenon inventory, 40 will be active target time projection chamber which thus contains about 3.6 Here, we show that projected half-life sensitivity $$2.4\times {10}^{27}\,{\hbox...
This paper presents a novel approach to addressing challenges in neutrino event reconstruction within large Time Projection Chambers (TPCs). By integrating fiber-coupled digital silicon photomultipliers, we propose design that enhances light detection, improves energy resolution, and enhance reconstruction. Advancements power signal over fiber technologies are leveraged deploy sensors the TPC bulk volume, enabling precise timing robust particle identification.
We present the first constraints on spin-dependent, inelastic scattering cross section of weakly interacting massive particles (WIMPs) nucleons from XENON100 data with an exposure $7.64\ifmmode\times\else\texttimes\fi{}{10}^{3}\text{ }\text{ }\mathrm{kg}\ifmmode\cdot\else\textperiodcentered\fi{}\text{days}$. is a dual-phase xenon time projection chamber 62 kg active mass, operated at Laboratori Nazionali del Gran Sasso (LNGS) in Italy and designed to search for nuclear recoils WIMP-nucleus...
The XENON1T dark matter experiment aims to detect Weakly Interacting Massive Particles (WIMPs) through low-energy interactions with xenon atoms. To such a rare event necessitates the use of radiopure materials minimize number background events within expected WIMP signal region. In this paper we report results an extensive material radioassay campaign for experiment. Using gamma-ray spectroscopy and mass spectrometry techniques, systematic measurements trace radioactive impurities in over...
We report on weakly interacting massive particles (WIMPs) search results in the XENON100 detector using a nonrelativistic effective field theory approach. The data from science run II ($34\text{ }\text{ }\mathrm{kg}\ifmmode\times\else\texttimes\fi{}224.6$ live days) were reanalyzed, with an increased recoil energy interval compared to previous analyses, ranging $(6.6--240)\text{ }{\mathrm{keV}}_{\mathrm{nr}}$. are found be compatible background-only hypothesis. present 90% confidence level...
The XENON1T experiment aims for the direct detection of dark matter in a detector filled with 3.3 tons liquid xenon. In order to achieve desired sensitivity, background induced by radioactive decays inside has be sufficiently low. One major contributor is $$\beta $$ -emitter $$^{85}$$ Kr which present For concentration natural krypton xenon $$\mathrm {^{nat}\mathrm{Kr/Xe}\,<\,200\,ppq}$$ (parts per quadrillion, $$1~\mathrm{ppq}~=10^{-15} \mathrm{mol/mol}$$ ) required. this work, design,...
Abstract We detail the sensitivity of proposed liquid xenon DARWIN observatory to solar neutrinos via elastic electron scattering. find that will have potential measure fluxes five neutrino components: pp , $$^7$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>7</mml:mn> </mml:msup> </mml:math> Be, $$^{13}$$ <mml:mn>13</mml:mn> N, $$^{15}$$ <mml:mn>15</mml:mn> O and pep . The precision components is hindered by double-beta decay $$^{136}$$...