A5026718551- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Dark Matter and Cosmic Phenomena
- Aerospace Engineering and Energy Systems
- Radiation Therapy and Dosimetry
- Nuclear Physics and Applications
- CCD and CMOS Imaging Sensors
- Atmospheric Ozone and Climate
- Spacecraft and Cryogenic Technologies
- Astrophysics and Cosmic Phenomena
- Muon and positron interactions and applications
- Neutrino Physics Research
- Nuclear reactor physics and engineering
- Nuclear physics research studies
Czech Academy of Sciences, Institute of Physics
2025
Institute of Physics
2019-2024
Jagiellonian University
2019-2024
Osaka University
2024
Columbia University
2023-2024
AGH University of Krakow
2023
We present an analysis of proton number fluctuations in $\sqrt{s_{NN}}$ = 2.4 GeV Au+Au collisions measured with the High-Acceptance DiElectron Spectrometer (HADES) at GSI. With help extensive detector simulations done IQMD transport model events including nuclear clusters, various nuisance effects influencing observed cumulants have been investigated. Acceptance and efficiency corrections applied as a function fine grained rapidity transverse momentum bins, well considering local track...
Flow coefficients $v_{n}$ of the orders $n = 1 - 6$ are measured with High-Acceptance DiElectron Spectrometer (HADES) at GSI for protons, deuterons and tritons as a function centrality, transverse momentum rapidity in Au+Au collisions $\sqrt{s_{NN}} 2.4$ GeV. Combining information from flow all allows to construct first time, collision energies few GeV, multi-differential picture angular emission pattern these particles. It reflects complicated interplay between effect central fireball...
The global polarization of {\Lambda} hyperons along the total orbital angular momentum a relativistic heavy-ion collision is presented based on high statistics data samples collected in Au+Au collisions at \sqrt{s_{NN}} = 2.4 GeV and Ag+Ag 2.55 with High-Acceptance Di-Electron Spectrometer (HADES) GSI, Darmstadt. This first measurement below strangeness production threshold nucleon-nucleon collisions. Results are reported as function centrality well hyperon transverse (p_T) rapidity (y_{CM})...
Abstract High-precision measurements of flow coefficients $$v_{n}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>v</mml:mi> <mml:mi>n</mml:mi> </mml:msub> </mml:math> ( $$n = 1 - 4$$ <mml:mrow> <mml:mo>=</mml:mo> <mml:mn>1</mml:mn> <mml:mo>-</mml:mo> <mml:mn>4</mml:mn> </mml:mrow> ) for protons, deuterons and tritons relative to the first-order spectator plane have been performed in Au+Au collisions at $$\sqrt{s_{_{{\text {NN}}}}}= 2.4$$ <mml:msqrt>...
The Gamma-Ray and AntiMatter Survey (GRAMS) is a next-generation balloon/satellite mission utilizing Liquid Argon Time Projection Chamber (LArTPC) detector to measure both MeV gamma rays antinuclei produced by dark matter annihilation or decay. GRAMS can identify antihelium-3 events based on the measurements of X-rays charged pions from decay exotic atoms, Flight (TOF), energy deposition, stopping range. This paper shows sensitivity estimation using GEANT4 Monte Carlo simulation. For...
This paper summarises a comprehensive Monte Carlo simulation study for precision resonance energy scan measurements. Apart from the proof of principle natural width and line shape measurements very narrow resonances with PANDA, achievable sensitivities are quantified concrete example charmonium-like X(3872) state discussed to be exotic, larger parameter space various assumed signal cross-sections, input widths luminosity combinations. PANDA is only experiment that will able perform scans...
We present the first observation of K^{-} and ϕ absorption within nuclear matter by means π^{-}-induced reactions on C W targets at an incident beam momentum 1.7 GeV/c studied with HADES SIS18/GSI. The double ratio (K^{-}/K^{+})_{W}/(K^{-}/K^{+})_{C} is found to be 0.319±0.009(stat)_{-0.012}^{+0.014}(syst) indicating a larger in heavier as compared lighter ones. measured ϕ/K^{-} ratios π^{-}+C π^{-}+W acceptance are equal 0.55±0.04(stat)_{-0.07}^{+0.06}(syst)...
A feasibility study has been performed in order to investigate the performance of HADES detector measure electromagnetic decays hyperon resonances $\Sigma(1385)^0$, $\Lambda(1405)$ and $\Lambda{\Lambda}(1520)$ as well production double strange baryon systems $\Xi^-$ $\Lambda\Lambda$ p+p reactions at a beam kinetic energy 4.5 GeV. The existing will be upgraded by new Forward Detector, which extends acceptance into range polar angles that plays crucial role for these investigations. analysis...
Abstract This paper reports on Monte Carlo simulation results for future measurements of the moduli time-like proton electromagnetic form factors, $$|G_{E}|$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>|</mml:mo> </mml:mrow> <mml:msub> <mml:mi>G</mml:mi> <mml:mi>E</mml:mi> </mml:msub> </mml:math> and $$|G_{M}|$$ <mml:mi>M</mml:mi> , using $$\bar{p} p \rightarrow \mu ^{+} ^{-}$$ <mml:mover> <mml:mi>p</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mo>→</mml:mo>...
We present high-statistic data on charged pion emission from Au+Au collisions at $\sqrt{s_{\rm{NN}}}$ = 2.4 GeV (corresponding to $E_{beam}$ 1.23 A GeV) in four centrality classes the range 0 - 40$\%$ of most central collisions. The are analyzed as a function transverse momentum, mass, rapidity, and polar angle. Pion multiplicity per participating nucleon decreases moderately with increasing centrality. angular distributions found be non-isotropic even for event class. Our results fit well...
The antiproton experiment PANDA at FAIR is designed to bring hadron physics a new level in terms of scope, precision and accuracy. In this work, its unique capability for studies hyperons outlined. We discuss ground-state as diagnostic tools study non-perturbative aspects the strong interaction, fundamental symmetries. New simulation have been carried out two benchmark hyperon-antihyperon production channels: $\bar{p}p \to \bar{\Lambda}\Lambda$ \bar{\Xi}^+\Xi^-$. results, presented detail...
Pion-induced reactions provide unique opportunities for an unambiguous description of baryonic resonances and their coupling channels by means a partial-wave analysis. Using the secondary pion beam at SIS18, two-pion production in second resonance region has been investigated to unravel role $N(1520){\frac{3}{2}}^{\ensuremath{-}}$resonance intermediate $\ensuremath{\rho}$-meson production. Results on exclusive with one (${\ensuremath{\pi}}^{\ensuremath{-}}p$) two pions...
The Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities a new generation of hadron-, nuclear- atomic physics experiments. future antiProton ANnihilations at DArmstadt (PANDA or $\overline{\rm P}$ANDA) experiment FAIR will offer broad programme, covering different aspects the strong interaction. Understanding latter non-perturbative regime remains one greatest challenges contemporary physics. antiproton-nucleon interaction studied with PANDA...
Abstract Hadron production ( $$\pi ^\pm $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>±</mml:mo> </mml:msup> </mml:math> , proton, $$\Lambda <mml:mi>Λ</mml:mi> $$K_S^0$$ <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> $$K^\pm ) in ^- + \textrm{C}$$ <mml:mrow> <mml:mo>-</mml:mo> <mml:mo>+</mml:mo> <mml:mtext>C</mml:mtext> </mml:mrow> and \textrm{W}$$ <mml:mtext>W</mml:mtext> collisions is investigated...
The study of baryon excitation spectra provides insight into the inner structure baryons. So far, most world-wide efforts have been directed towards $N^*$ and $\Delta$ spectroscopy. Nevertheless, double triple strange spectrum independent information to spectra. future antiproton experiment PANDA will provide direct access final states containing a $\bar{\Xi}\Xi$ pair, for which production cross sections up $\mu$b are expected in $\bar{p}p$ reactions. With luminosity...
Large-scale physics experiments running at high interaction rates place a demand on the data acquisition system (DAQ) responsible for transporting from detector to storage. The antiProton ANihilation DArmstadt (PANDA) facility anti-proton and ion research (FAIR) is one such experiment of future that will not use fixed hardware triggers; instead, event selection based real-time feature extraction, filtering, high-level correlations. A firmware framework processing has been developed tested...
In this letter we report the first multi-differential measurement of correlated pion-proton pairs from 2 billion Au+Au collisions at sNN=2.42 GeV collected with HADES. energy regime population Δ(1232) resonances plays an important role in way is distributed between intrinsic excitation and kinetic hadrons fireball. The triple differential d3N/dMπ±pdpTdy distributions π±p have been determined by subtracting πp combinatorial background using iterative method. invariant-mass mass region show...
Abstract Recent years have shown an increased use of silicon photomultipliers (SiPM) in experiments as they are reasonable cost, relatively low power consumption and easily available a variety form factors allowing for large number readout channels. At the same time, generating data at increasingly high rates requiring more efficient systems. In this work, dead efficiency, dynamic range, coincidence time resolution energy five different systems various stages maturity evaluated to determine...
GRAMS (Gamma-Ray and AntiMatter Survey) is a next-generation proposed balloon-borne/satellite-based mission aimed at high sensitivity MeV gamma-ray astrophysical observations background-free indirect dark matter search via hadronic antiparticles. The main detector of meter-scale liquid argon time projection chamber (LArTPC). adoption as material allows us to produce an unprecedentedly large effective area instrument both for cosmic gamma rays 0.5-20 antiparticles origin. This area, which...
GRAMS (Gamma-Ray and AntiMatter Survey) is a next-generation balloon/satellite experiment utilizing LArTPC (Liquid Argon Time Projection Chamber), to simultaneously target astrophysical observations of cosmic MeV gamma-rays conduct an indirect dark matter search using antimatter. While LArTPCs are widely used in particle physics experiments, they have never been operated at balloon altitudes. An engineering flight with small-scale (eGRAMS) was conducted on July 27th, 2023, establish system...
Abstract GRAMS (Gamma-Ray and AntiMatter Survey) is a next-generation balloon/satellite experiment utilizing LArTPC (Liquid Argon Time Projection Chamber), to simultaneously target astrophysical observations of cosmic MeV gamma-rays conduct an indirect dark matter search using antimatter. While LArTPCs are widely used in particle physics experiments, they have never been operated at balloon altitudes. An engineering flight with small-scale (eGRAMS) was conducted on July 27th, 2023, establish...
Abstract In nuclear collisions the incident protons generate a Coulomb field which acts on produced charged particles. The impact of these interactions charged-pion transverse-mass and rapidity spectra, as well pion–pion momentum correlations is investigated in Au + at $$\sqrt{s_\text {NN}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi> <mml:mtext>NN</mml:mtext> </mml:msub> </mml:msqrt> </mml:math> = 2.4 GeV. We show that low- $$m_t$$...