M. Šumbera
A5081205040- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Nuclear reactor physics and engineering
- Particle Detector Development and Performance
- Stochastic processes and statistical mechanics
- Nuclear physics research studies
- Distributed and Parallel Computing Systems
- Cosmology and Gravitation Theories
- Theoretical and Computational Physics
- Statistical Methods and Bayesian Inference
- Markov Chains and Monte Carlo Methods
- Dark Matter and Cosmic Phenomena
- X-ray Spectroscopy and Fluorescence Analysis
- Radiation Detection and Scintillator Technologies
- Pulsars and Gravitational Waves Research
- Advanced Data Storage Technologies
- Cold Atom Physics and Bose-Einstein Condensates
- Particle Accelerators and Free-Electron Lasers
- Computational Physics and Python Applications
- Nuclear Physics and Applications
- Scientific Computing and Data Management
- Fusion materials and technologies
- Astrophysics and Cosmic Phenomena
- Atomic and Molecular Physics
Czech Academy of Sciences, Nuclear Physics Institute
2016-2025
Argonne National Laboratory
2016-2024
Ball State University
2023-2024
Central China Normal University
2016-2024
University of Vienna
2024
Lund University
2016-2024
Indian Institute of Technology Patna
2023-2024
Huzhou University
2024
Frankfurt Institute for Advanced Studies
2013-2024
Creighton University
2004-2024
In this review, we present an up-to-date phenomenological summary of research developments in the physics Quark–Gluon Plasma (QGP). A short historical perspective and theoretical motivation for rapidly developing field contemporary particle is provided. addition, introduce discuss role quantum chromodynamics (QCD) ground state, non-perturbative lattice QCD results on QGP properties, as well transport models used to make a connection between theory experiment. The experimental part presents...
We report on first measurements of low-mass electron-positron pairs in Pb-Au collisions at the CERN SPS beam energy 40 AGeV. The observed pair yield integrated over range invariant masses 0.2<m</=1 GeV/c(2) is enhanced expectation from neutral meson decays by a factor 5.9+/-1.5(stat)+/-1.2(syst data)+/-1.8(syst decays), somewhat larger than previously higher 158 results are discussed with reference to model calculations based pi(+)pi(-)-->e(+)e(-) annihilation modified rho propagator. They...
We present a measurement of e+e− pair production in central PbAu collisions at 158AGeV/c. As reported earlier, significant excess the yield over expectation from hadron decays is observed. The improved mass resolution data set, recorded with upgraded CERES experiment CERN-SPS, allows for comparison different theoretical approaches. clearly favor substantial in-medium broadening ρ spectral function density-dependent shift pole mass. model implies that baryon induced interactions are key...
Based on an evaluation of data pion interferometry and particle yields at midrapidity, we propose a universal condition for thermal freeze-out pions in heavy-ion collisions. We show that occurs when the mean free path lambda(f) reaches value about 1 fm, which is much smaller than spatial extent system freeze-out. This critical independent centrality collision beam energy from Alternating Gradient Synchrotron to Relativistic Heavy Ion Collider.
The azimuthal angle distributions of neutral pions at midrapidity from Au+Au reactions 1 GeV/nucleon incident energy have been measured. An enhanced emission π0's perpendicular to the reaction plane is observed. asymmetry dependent on π0 momentum: spectrum harder than in plane. strength observed appears be more pronounced for charged particles and neutrons.Received 29 April 1993DOI:https://doi.org/10.1103/PhysRevLett.71.835©1993 American Physical Society
Transverse momentum spectra of \ensuremath{\eta} mesons have been measured near the free nucleon-nucleon production threshold in heavy ion reactions $^{40}\mathrm{Ar}$+ $^{\mathrm{nat}}\mathrm{Ca}$, $^{86}\mathrm{Kr}$ + $^{\mathrm{nat}}\mathrm{Zr}$, and $^{197}\mathrm{Au}$+ $^{197}\mathrm{Au}$ at 1.0A GeV also $^{\mathrm{nat}}\mathrm{Ca}$ 1.5A GeV. The transverse distributions are compared to model calculations. relative abundance \ensuremath{\Delta}(1232) N(1535) resonances excited...
We report a measurement of $\phi$ meson production in central Pb+Au collisions at E$_{lab}$/A=158 GeV. For the first time heavy-ion collisions, mesons were reconstructed same experiment both K$^+$K$^-$ and dilepton decay channel. Near mid-rapidity, this yields rapidity densities, corrected for value, 2.05 +- 0.14(stat) 0.25(syst) 2.04 0.49(stat)+-{0.32}(syst), respectively. The shape measured transverse momentum spectra is also close agreement channels. data rule out possible enhancement...
An extensive phenomenological study of the Drell-Yan (DY) process in $pp$ collisions at various energies is performed color dipole framework. Besides previously studied ${\ensuremath{\gamma}}^{*}$ production we also include ${Z}^{0}$ contribution relevant large dilepton invariant masses. We investigate DY cross section differential mass, rapidity and transverse momentum pair RHIC LHC. consider three different models for find a reasonable agreement with available data. As further test...
Proceedings of ISMD08
In this review, we provide a short outlook of some the currently most popular pictures and promising approaches to non-perturbative physics confinement in gauge theories. A qualitative by no means exhaustive discussion presented here covers such key topics as phases QCD matter, order parameters for confinement, central vortex monopole vacuum structure, fundamental properties string tension, realisations gauge-Higgs Yang-Mills theories, magnetic order/disorder phase transition among others.
A phenomenological study of the isolated photon production in high energy $pp$ and $pA$ collisions at RHIC LHC energies is performed. Using color dipole approach we investigate cross section differential transverse momentum considering three different models for universal section. We also present predictions rapidity dependence ratio to sections. As a further test formalism, rapidities analyze correlation function azimuthal angle $\mathrm{\ensuremath{\Delta}}\ensuremath{\phi}$ between...
We study a strong suppression of the relative production rate ($d$-Au)/($p\text{\ensuremath{-}}p$) for inclusive high-${p}_{T}$ hadrons different species at large forward rapidities (large Feynman ${x}_{F}$). The model predictions calculated in light-cone dipole approach are good agreement with recent measurements by BRAHMS and STAR Collaborations BNL Relativistic Heavy Ion Collider. predict similar ${p}_{T}$ ${x}_{F}$ also lower energies, where no effect coherence is possible. This allows...
The wealth of theoretical and phenomenological information about Quantum Chromodynamics at short long distances collected so far in major collider measurements has profound implications cosmology. We provide a brief discussion on the strongly coupled dynamics quarks gluons as well effects due to their collective motion physics early universe astrophysics.
We present results of a two-pion correlation analysis performed with the $\mathrm{Pb}+\mathrm{Au}$ collision data collected by upgraded CERES experiment in fall 2000. The was done bins reaction centrality and pion azimuthal emission angle respect to plane. source, deduced from data, is slightly elongated direction perpendicular plane, similarly as observed at Brookhaven National Laboratory Alternating Gradient Synchrotron Relativistic Heavy Ion Collider.