A5047052838- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Atomic and Molecular Physics
- Computational Physics and Python Applications
- Muon and positron interactions and applications
- Atomic and Subatomic Physics Research
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Nuclear physics research studies
- Cold Atom Physics and Bose-Einstein Condensates
- Particle accelerators and beam dynamics
- Quantum, superfluid, helium dynamics
- Medical Imaging Techniques and Applications
- Astrophysics and Cosmic Phenomena
- Advanced Chemical Physics Studies
- Radiation Therapy and Dosimetry
- Black Holes and Theoretical Physics
- CCD and CMOS Imaging Sensors
- Particle Accelerators and Free-Electron Lasers
- Advanced NMR Techniques and Applications
Stefan Meyer Institute for Subatomic Physics
2017-2025
University of Zurich
2015-2025
Christ University
2025
Austrian Academy of Sciences
2017-2024
University of Antwerp
2024
Institute of High Energy Physics
2013-2024
A. Alikhanyan National Laboratory
2022-2024
National Central University
2023
University of Bern
2013-2017
Albert Einstein College of Medicine
2016
This biennial review summarizes much of Particle Physics. Using data from previous editions, plus 1900 new measurements 700 papers, we list, evaluate, and average measured properties gauge bosons, leptons, quarks, mesons, baryons. We also summarize searches for hypothetical particles such as Higgs heavy neutrinos, supersymmetric particles. All the particle search limits are listed in Summary Tables. give numerous tables, figures, formulae, reviews topics Standard Model, detectors,...
The summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,717 new measurements 869 papers, we list, evaluate, average measured properties gauge bosons the recently discovered Higgs boson, leptons, quarks, mesons, baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle search limits are listed in Summary Tables. give numerous tables, figures, formulae, reviews topics...
Abstract Antihydrogen atoms with K or sub-K temperature are a powerful tool to precisely probe the validity of fundamental physics laws and design highly sensitive experiments needs antihydrogen controllable well defined conditions. We present here experimental results on production in pulsed mode which time when 90% produced is known an uncertainty ~250 ns. The source generated by charge-exchange reaction between Rydberg positronium atoms—produced via injection positron beam into...
This report reviews the achievements of Crystal Barrel experiment at Low-Energy Antiproton Ring (LEAR) CERN. During seven years operation has collected very large statistical samples in $\overline{p}p$ annihilation, especially rest and with emphasis on final states high neutral multiplicity. The measured rates for annihilation into various two-body channels electromagnetic processes have been used to test simple models mechanism based internal quark structure hadrons. production...
Following a major shortage of 99Mo in the 2009–2010 period, concern grew that aging reactor production facilities needed to be replaced. Most producers were using highly enriched 235U (HEU) as target material. The Organisation for Economic Co-...Read More
The AEGIS experiment, currently being set up at the Antiproton Decelerator CERN, has objective of studying free fall antimatter in Earth's gravitational field by means a pulsed cold atomic beam antihydrogen atoms. Both duration and vertical displacement horizontally emitted atoms will be measured, allowing first test WEP with antimatter.
Abstract The precise measurement of forces is one way to obtain deep insight into the fundamental interactions present in nature. In context neutral antimatter, gravitational interaction high interest, potentially revealing new that violate weak equivalence principle. Here we report on a successful extension tool from atom optics—the moiré deflectometer—for acceleration slow antiprotons. setup consists two identical transmission gratings and spatially resolving emulsion detector for...
We demonstrate the laser excitation of $n=3$ state positronium (Ps) in vacuum. A combination a specially designed pulsed slow positron beam and high-efficiency converter target was used to produce Ps. Its annihilation recorded by single-shot lifetime spectroscopy. Pulsed level at wavelength $\ensuremath{\lambda}\ensuremath{\approx}205$ nm monitored via Ps photoionization induced second intense pulse $\ensuremath{\lambda}=1064$ nm. About 15% overall emitted into vacuum excited photoionized....
Historic structures are affected by numerous degradation processes driven a complex system of interconnected and mutually influencing factors. Preserving these monuments is multidisciplinary endeavour that extends beyond one-time interventions, necessitating comprehensive methodology involves various stakeholders, expert consultations, monitoring tools, impact assessments. Limitations arise due to communication barriers difficulty in translating transferring experience among disciplines,...
Production of antihydrogen atoms by mixing antiprotons with a cold, confined, positron plasma depends critically on parameters such as the density and temperature. We discuss nondestructive measurements, based novel, real-time analysis excited, low-order modes, that provide comprehensive characterization in ATHENA apparatus. The length, radius, density, total particle number are obtained. Measurement control temperature variations, application to production experiments discussed.
Antihydrogen is formed when antiprotons are mixed with cold positrons in a nested Penning trap. We present experimental evidence, obtained using our antihydrogen annihilation detector, that the spatial distribution of emerging atoms independent positron temperature and axially enhanced. This indicates before thermal equilibrium plasma. result has important implications for trapping spectroscopy antihydrogen.
We describe a system designed to re-bunch positron pulses delivered by an accumulator supplied source and Surko-trap. Positron from the are magnetically guided in 0.085 T field injected into region free of magnetic fields through μ-metal terminator. Here positrons temporally compressed, electrostatically accelerated towards porous silicon target for production emission positronium vacuum. Positrons focused spot less than 4 mm FWTM bunches ∼8 ns FWHM. Emission vacuum is shown single shot...
The goal of the ASACUSA-CUSP collaboration at Antiproton Decelerator CERN is to measure ground-state hyperfine splitting antihydrogen using an atomic spectroscopy beamline. A milestone was achieved in 2012 through detection 80 atoms 2.7 m away from their production region. This first observation ‘cold’ a magnetic field free In parallel progress on production, beamline tested with source hydrogen. led measurement relative precision 2.7×10 −9 which constitutes most precise hydrogen beam....
We show that antihydrogen production is the dominant process when mixing antiprotons and positrons in ATHENA apparatus, initial rate exceeds 300 Hz, decaying to 30 Hz within 10 s. A fraction of 65% all observed annihilations due antihydrogen.
The MUNU experiment was carried out at the Bugey nuclear power reactor. aim study of ν̄ee− elastic scattering low energy. recoil electrons were recorded in a gas time projection chamber, immersed tank filled with liquid scintillator serving as veto detector, suppressing particular Compton electrons. measured electron spectrum is presented. Upper limits on neutrino magnetic moment derived and are discussed.
To optimise the design of light readout in ArDM 1-ton liquid argon dark matter detector, a range reflector and WLS coating combinations were investigated several small setups, where scintillation was generated by radioactive sources gas at normal temperature pressure shifted into blue region tetraphenyl butadiene (TPB). Various thicknesses TPB deposited spraying vacuum evaporation onto specular 3M{\small\texttrademark}-foil diffuse Tetratex{\small\textregistered} (TTX) substrates. Light...