A5066138939- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Material Dynamics and Properties
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Phase Equilibria and Thermodynamics
- Advanced Thermodynamics and Statistical Mechanics
- Nuclear physics research studies
- Graphene research and applications
- Theoretical and Computational Physics
- Advanced biosensing and bioanalysis techniques
- Nuclear Physics and Applications
- Microfluidic and Capillary Electrophoresis Applications
- CCD and CMOS Imaging Sensors
- Neutrino Physics Research
- Fluid Dynamics and Turbulent Flows
- Experimental Learning in Engineering
- Environmental Engineering and Cultural Studies
- Thermodynamic properties of mixtures
- Advanced Optical Sensing Technologies
- Muon and positron interactions and applications
- Gas Dynamics and Kinetic Theory
- Maritime Navigation and Safety
- Educational Games and Gamification
Oregon State University
2013-2022
Idaho Department of Fish and Game
2022
Institute of Physics of the Slovak Academy of Sciences
2018
Slovak Academy of Sciences
2018
Goethe University Frankfurt
1963-2017
Technical University of Munich
2013
Lawrence Berkeley National Laboratory
2002
We develop a classical density functional for water which combines the White Bear fundamental-measure theory (FMT) hard sphere fluid with attractive interactions based on statistical associating variable range (SAFT-VR). This reproduces properties of at both long and short length scales over wide temperatures is computationally efficient, comparable to cost FMT itself. demonstrate our by applying it systems composed two rods, four rods arranged in square, spheres water.
We report on the first measurement of $p\mathrm{\ensuremath{\Lambda}}$ and $pp$ correlations via femtoscopy method in $p$ + Nb reactions at $\sqrt{{s}_{\mathit{NN}}}=3.18\phantom{\rule{0.28em}{0ex}}\mathrm{GeV}$, studied with High Acceptance Di-Electron Spectrometer (HADES). By comparing experimental correlation function to model calculations, a source size for pairs...
The inclusive production of {\Lambda} hyperons in proton-proton collisions at $\sqrt{s}$ = 3.18 GeV was measured with HADES the GSI Helmholtzzentrum f\"ur Schwerionenforschung Darmstadt. experimental data are compared to a data-based model for individual exclusive channels same reaction. contributions intermediate resonances such as {\Sigma}(1385), {\Delta}++ or N* considered detail. In particular, result partial wave analysis is accounted abundant pK$^+${\Lambda} final state. Model and show...
The production of $\Sigma^{0}$ baryons in the nuclear reaction p (3.5 GeV) + Nb (corresponding to $\sqrt{s_{NN}}=3.18$ is studied with detector set-up HADES at GSI, Darmstadt. $\Sigma^{0}$s were identified via decay $\Sigma^{0} \rightarrow \Lambda \gamma$ subsequent decays $\Lambda \pi^{-}$ coincidence a $e^{+}e^{-}$ pair from either external ($\gamma e^{+} e^{-}$) or internal (Dalitz $\gamma^{*}\rightarrow gamma conversions. differential $\Sigma^0$ cross section integrated over acceptance,...
This work presents the analysis of performance RPC ToF wall HADES, located at GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt. The behavior detector is studied in Au+Au collisions 1.23 AGeV. A main characteristic that all active areas were designed to be electrically shielded order operate high occupancies chambers. Here we show achieved regarding efficiency and timing capabilities different this special design after applied offline corrections data. Also stability intrinsic time...
CMOS Monolithic Active Pixel Sensors (MAPS) demonstrated excellent performances in the field of charged particle tracking. Among their strong points are an single point resolution few μm, a light material budget 0.05% X0 combination with good radiation tolerance and high rate capability. Those features make sensors valuable technology for vertex detectors various experiments heavy ion physics. To reduce load on event builders future mass storage systems, we have developed algorithms suited...
We present a modification to our recently published SAFT-based classical density functional theory for water. have developed and tested the averaged radial distribution function at contact of hard-sphere fluid that is dramatically more accurate interfaces than earlier approximations. now incorporate this improved into association term free energy water, improving its description hydrogen bonding. examine effect improvement by studying two hard solutes: hydrophobic rod sphere. The leads...
Hadron modifications in nuclear matter are discussed connection to chiral symmetry restoration and/or hadronic many body effects. Experiments with photon, proton and heavy ion beams used probe properties of hadrons embedded at different temperatures densities. Most the information has been gathered for light vector mesons ρ ω ø. HADES is a second generation experiment operating GSI main aim study in-medium by means dielectron production SIS18/Bevelac energy range. Large acceptance excellent...
We present and discuss recent experimental activities of the HADES collaboration on open hidden strangeness production close or below elementary NN threshold. Special emphasis is put feed-down from ϕ mesons to antikaons, presence Ξ- excess in cold nuclear matter comparison statistical model rates p+p data. The implications for interpretation heavy-ion data are discussed as well.
We introduce a soft fundamental measure theory functional for the purely repulsive Weeks-Chandler-Andersen (WCA) fluid. This classical density could serve as reference fluid functionals created using thermodynamic perturbation instead of hard-sphere Our incorporates temperature-dependent parameters describing length scale and effective softness particle interaction, which reproduce second virial coefficient WCA find that this approach is comparable in accuracy to Barker-Henderson combined...
In this paper we report on the investigation of baryonic resonance production in proton-proton collisions at kinetic energies 1.25 GeV and 3.5 GeV, based data measured with HADES. Exclusive channels npπ+ ppπ0 as well ppe+e− were studied simultaneously framework a one-boson exchange model. The cross sections determined from one-pion for Δ(1232) N(1440) (1.25 GeV) further Δ N* resonances up to 2 GeV/c2 data. energy also analysed within partial wave analysis together set several other...
We present the results of two-pion production in tagged quasi-free np collisions at a deutron incident beam energy 1.25 GeV/c measured with High-Acceptance Di-Electron Spectrometer (HADES) installed GSI. The specific acceptance HADES allowed for first time to obtain high-precision data on π+π− and π−π0 region corresponding large transverse momenta secondary particles. obtained differential cross section provide strong constraints mechanisms various baryon resonance contributions (∆∆,...
Many QCD based and phenomenological models predict changes of hadron properties in a strongly interacting environment. The results these differ significantly the experimental determination nuclear matter is essential. In this paper we present review selected physics obtained at GSI Helmholtzzentrum für Schwerionenforschung GmbH by HADES (High-Acceptance Di-Electron Spectrometer). e+e− pair emission measured for proton heavy-ion induced collisions reported together with on strangeness...
CMOS Monolithic Active Pixel Sensors (MAPS) demonstrated excellent performances in the field of charged particle tracking. They feature an single point resolution few μm, a light material budget 0.05% Xo combination with good radiation tolerance and time resolution. This makes sensors valuable technology for micro vertex detectors (MVD) various experiments heavy ion physics like STAR CBM. State art MAPS are equipped rolling shutter readout. Therefore, data one individual event is typically...
New results on the differential cross section in deuteron-proton elastic scattering are obtained at deuteron kinetic energy of 2.5 GeV with HADES spectrometer. The angular range 69° – 125° center mass system is covered. compared relativistic multiple model calculation using CD-Bonn wave function. data fixed angles c.m. qualitative agreement constituent counting rules prediction.
Following our recent letter [1] on inclusive e + -pair production in proton induced reactions at E kin = 3.5 GeV the nucleus Nb, we present here addition transverse and rapidity distributions for various -invariant mass bins compare them to reference data measured p+p reactions.
This contribution aims to give a basic overview of the latest results regarding production resonances in different collision systems. The were extracted from experimental data collected with HADES that is multipurpose detector located at GSI Helmholtzzentrum, Darmstadt. main points discussed here are: properties strange Λ(1405) and Σ(1385), role Δ’s as source pions final state, dynamics reflected form differential cross sections, ϕ meson for K− particles.
The High Acceptance DiElectron Spectrometer HADES [1] is installed at the Helmholtzzentrum für Schwerionenforschung (GSI) accelerator facility in Darmstadt. It investigates dielectron emission and strangeness production 1-3 AGeV regime. A recent experiment series focusses on medium-modifications of light vector mesons cold nuclear matter. In two runs, p+p p+Nb reactions were investigated 3.5 GeV beam energy; about 9·109 events have been registered. contrast to other experiments high...
Recent results obtained with the HADES experimental set-up at GSI are presented a focus on dielectron production and strangeness in pp quasi-free np reactions. Perspectives related to very recent experiment using pion beam also discussed.
We present a problem-based approach to teach computational physics junior-level students with variety of programming skill levels, many whom have only 10 weeks prior experience. The solve tasks, relating their current class topics, which are mathematically challenging but computationally tractable. tasks chosen develop and reinforce student understanding traditional content. provide minimal code examples (47 lines python in one-year lab sequence) no textbook, require search the internet for...