A. Prozorov
A5005110536- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Fractional Differential Equations Solutions
- Differential Equations and Numerical Methods
- Industrial Engineering and Technologies
- Nuclear physics research studies
- Nonlinear Waves and Solitons
- Advanced Power Generation Technologies
- Superconducting Materials and Applications
- Cyclone Separators and Fluid Dynamics
- Mathematical and Theoretical Epidemiology and Ecology Models
Institute of Nuclear Physics
2025
Czech Academy of Sciences, Nuclear Physics Institute
2019-2024
Charles University
2022-2023
National Research Tomsk State University
2015
Tomsk Polytechnic University
2015
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})...
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...
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...
Abstract. Relativistic nucleus-nucleus collisions offer a unique possibility for studying nuclear matter under the influence of high temperature and pressure. During collision system interacting nucleons, resonances, mesons, called hadronic fireball, is created. HADES experiment capable simultaneously measuring all three species pions this energy regime. Results on neutral pion production in Ag + at √S NN = 2.55 GeV (beam 1.58 A GeV) with 14 billion collected events will be presented....
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...
Radiative transition of an excited baryon to a nucleon with emission virtual massive photon converting dielectron pair (Dalitz decays) provides important information about baryon-photon coupling at low q 2 in timelike region. A prominent enhancement the respective electromagnetic Form Factors (etFF) near vector mesons ρ/ω poles has been predicted by various calculations reflecting strong baryon-vector meson couplings. The understanding these couplings is also primary importance for...
First information on the timelike electromagnetic structure of baryons in second resonance region has been obtained from measurements invariant mass and angular distributions quasi-free reaction $\pi^- p \to nee$ at $\sqrt{s_{\pi^- p}}$ = 1.49 GeV with High Acceptance Di-Electron Spectrometer (HADES) detector GSI using pion beam impinging a CH$_2$ target. We find total cross section $\sigma (\pi^- nee) 2.97 \pm 0.07^{data} 0.21^{acc} 0.31^{\rm{Z}_{\rm{eff}}} \mu$b. Combined Partial Wave...
Hadron production ($\pi^\pm$, proton, $\Lambda$, $K_S^0$, $K^\pm$) in $\pi^- + \mathrm{C}$ and \mathrm{W}$ collisions is investigated at an incident pion beam momentum of $1.7~\mathrm{GeV}/c$. This comprehensive set data measured with HADES SIS18/GSI significantly extends the existing world on hadron induced reactions provides a new reference for models that are commonly used interpretation heavy-ion collisions. The inclusive differential cross-sections compared state-of-the-art transport...
Abstract HADES is a large acceptance spectrometer operating at SIS18, GSI, Germany. It aimed exploration of QCD phase diagram the ion beam energies 1-2 AGeV in region high baryonic densities. The new segmented electromagnetic calorimeter (ECal) was built to extend experimental opportunities detector. will allow study reaction channels involving production neutral mesons and neu-tral resonances elementary heavy-ion reactions via detection their two photon decay. An additional advantage such...
Abstract HADES is a high acceptance di-electron spectrometer operating at SIS18, GSI, Germany aimed study of hadron-proton, hadron-nucleus and nucleus-nucleus collisions 1-4 AGeV beam energies. The new electromagnetic calorimeter (ECal) was added to the experimental setup in order measure γ -quanta thus extend its capabilities π 0 -, η -mesons, production neutral hyperons improve electron-to-hadron separation for partcles with momenta p > 300 MeV/c. first data taking ECal detector carried...
In March 2019 the HADES experiment recorded 14 billion Ag+Ag collisions at √ s NN = 2.55 GeV as a part of FAIR phase-0 physics program. this contribution, we present and investigate our capabilities to reconstruct analyze weakly decaying strange hadrons hypernuclei emerging from these collisions. The focus is put on measuring mean lifetimes particles.
The Dielectron Spectrometer HADES operated at the SIS18 synchrotron, FAIR/GSI Darmstadt recently provided new intriguing results on production of electron pairs and strangeness from nucleus-nucleus collisions, as well elementary reactions, in energy region $1 - 2$ A GeV. In 2019 spectrometer was complemented by an electromagnetic calorimeter based lead-glass modules, which allows us to measure photons thus study $\pi^0$ $\eta$ mesons via their two-photon decay. Knowledge neutral-meson is a...
Inclusive e$^+$e$^-$ production has been studied with HADES in $\pi^-$ + p, C and $\pi^- \mathrm{CH}_2$ reactions, using the GSI pion beam at $\sqrt{s_{\pi p}}$ = 1.49 GeV. Invariant mass transverse momentum distributions have measured reveal contributions from Dalitz decays of $\pi^0$, $\eta$ mesons baryon resonances. The are very sensitive to underlying kinematics various processes. contribution exhibits a deviation up factor seven QED reference expected for dielectron decay hypothetical...
HADES is a large acceptance spectrometer operating at SIS18, GSI, in Darmstadt, Germany [1]. It aimed exploration of the QCD phase diagram ion beam energies 1-2 AGeV region high density baryonic matter. An unphysical behavior particle directed flow deduced from raw experimental data obtained during study Au+Au collisions 1.23 observed. found that dependence on rapidity does not show antisymmetry expected symmetric projectile-target system, and there significant non-zero midrapidity where...
Abstract HADES (High Acceptance Di-Electron Spectrometer) is located at the GSI (Helmholtzzentrum für Schwerionenforschung) Darmstadt. It an experiment focused on study of hot and dense nuclear matter mainly via detection di-lepton pairs. Electromagnetic CALorimeter (ECAL) was recently added to setup. This new subdetector allows measuring photons from decay neutral mesons resonances. also discriminate between electrons pions in high-momenta region over 400 MeV/c. ECAL follows same hexagonal...