G. I. Veres
A5082920659- 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
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Nuclear reactor physics and engineering
- Magnetic confinement fusion research
- Laser-induced spectroscopy and plasma
- Medical Imaging Techniques and Applications
- Distributed and Parallel Computing Systems
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Fusion materials and technologies
- Laser-Plasma Interactions and Diagnostics
- Nuclear physics research studies
- Simulation Techniques and Applications
- Mathematics, Computing, and Information Processing
- Hungarian Social, Economic and Educational Studies
- Stochastic processes and statistical mechanics
- Atomic and Molecular Physics
- Gamma-ray bursts and supernovae
- Plasma Diagnostics and Applications
Eötvös Loránd University
2013-2025
Institute of High Energy Physics
2013-2024
Heidelberg University
1999-2024
HUN-REN Centre for Energy Research
2016-2024
A. Alikhanyan National Laboratory
2022-2024
University of Antwerp
2024
University Hospital Heidelberg
2022-2024
Budapest University of Technology and Economics
2024
HUN-REN Wigner Research Centre for Physics
2013-2023
Martin Luther University Halle-Wittenberg
2022
Measurements of charged pion and kaon production in central Pb+Pb collisions at 40, 80, 158 A GeV are presented. These compared with data lower higher energies as well results from $p+p$ interactions. The mean multiplicity per wounded nucleon increases approximately linearly ${s}_{\mathrm{NN}}^{1/4}$ a change slope starting the region 15--40 GeV. suppression respect to interactions, observed low collision energies, enhancement high occurs about 40A nonmonotonic energy dependence ratio...
Results on charged pion and kaon production in central Pb+Pb collisions at 20A 30A GeV are presented compared to data lower higher energies. A rapid change of the energy dependence is observed around for yields pions kaons as well shape transverse mass spectra. The compatible with prediction that threshold a state deconfined matter early stage located low SPS
This Letter presents measurements of the elliptic flow charged particles as a function pseudorapidity and centrality from Cu-Cu collisions at 62.4 200 GeV using PHOBOS detector Relativistic Heavy Ion Collider. The in is found to be significant even for most central events. For comparison with Au-Au results, it that detailed way which collision geometry (eccentricity) estimated critical importance when scaling out system-size effects. A new form eccentricity, called participant introduced...
This report presents the capabilities of CMS experiment to explore rich heavy-ion physics programme offered by CERN Large Hadron Collider (LHC). The collisions lead nuclei at energies , will probe quark and gluon matter unprecedented values energy density. prime goal this research is study fundamental theory strong interaction — Quantum Chromodynamics (QCD) in extreme conditions temperature, density parton momentum fraction (low-x).
Pseudorapidity distributions of charged particles emitted in $Au+Au$, $Cu+Cu$, $d+Au$, and $p+p$ collisions over a wide energy range have been measured using the PHOBOS detector at RHIC. The centrality dependence both particle multiplicity midrapidity were measured. with $|\eta|<5.4$, which account for between 95% 99% total charged-particle emission associated collision participants, are presented different centralities. Both density, $dN_{ch}/d\eta$, multiplicity, $N_{ch}$, found to...
Directed and elliptic flow measurements for charged pions protons are reported as a function of transverse momentum, rapidity, centrality 40A 158AGeV Pb+Pb collisions, recorded by the NA49 detector. Both standard method correlating particles with an event plane cumulant studying multiparticle correlations used. In directed is corrected conservation momentum. reconstructed from genuine four-, six-, eight-particle correlations, showing first unequivocal evidence collective motion in A+A...
Results of resonance searches in the Xi(-)pi(-), Xi(-)pi(+), Xi;(+)pi(-), and Xi;(+)pi(+) invariant mass spectra proton-proton collisions at sqrt[s]=17.2 GeV are presented. Evidence is shown for existence a narrow Xi(-)pi(-) baryon with 1.862+/-0.002 GeV/c(2) width below detector resolution about 0.018 GeV/c(2). The significance estimated to be above 4.2sigma. This state candidate hypothetical exotic Xi(--)(3/2) S=-2, I=3 / 2, quark content (dsdsū). At same mass, peak observed Xi(-)pi(+)...
In this paper, we investigate various ways of defining the initial source eccentricity using Monte Carlo Glauber (MCG) approach. particular, examine participant eccentricity, which quantifies shape by major axes ellipse formed interaction points participating nucleons. We show that reasonable variation density parameters in calculation, as well variations how matter production is modeled, do not significantly modify already established behavior a function collision centrality. Focusing on...
A measurement of two-particle correlations with a high transverse momentum trigger particle (p_T^{trig} > 2.5 GeV/c) is presented for Au+Au collisions at sqrt(s_NN) = 200 GeV over the uniquely broad longitudinal acceptance PHOBOS detector (-4 < \Delta\eta 2). broadening away-side azimuthal correlation compared to elementary observed all \Delta\eta. As in p+p collisions, near-side characterized by peak correlated partners small angle relative particle. However, central an additional extended...
We have measured transverse momentum distributions of charged hadrons produced in d+Au collisions at sqrt[s(NN)]=200 GeV. The spectra were obtained for momenta 0.25<p(T)<6.0 GeV/c, a pseudorapidity range 0.2<eta<1.4 the deuteron direction. evolution with collision centrality is presented comparison to p+pmacr; same energy. With increasing centrality, yield high increases more rapidly than overall particle density, leading strong modification spectral shape. This change shape qualitatively...
This Rapid Communication describes the measurement of elliptic flow for charged particles in Au+Au collisions at $\sqrt{{s}_{\mathit{NN}}}=200$ GeV using PHOBOS detector Relativistic Heavy Ion Collider. The measured azimuthal anisotropy is presented over a wide range pseudorapidity three broad collision centrality classes first time this energy. Two distinct methods extracting signal were used to reduce systematic uncertainties. falls sharply with increasing $|\ensuremath{\eta}|$ 200 all...
We present transverse momentum distributions of charged hadrons produced in Au+Au collisions at sqrt(s_NN) = 200 GeV. The spectra were measured for momenta p_T from 0.25 to 4.5 GeV/c a rapidity range 0.2 < y_pi 1.4. evolution the is studied as function collision centrality, 65 344 participating nucleons. results are compared data proton-antiproton and lower RHIC energies. find significant change spectral shape between peripheral collisions. Comparing central collisions, we that yields...
The transverse mass ${m}_{t}$ distributions for antiprotons are measured at midrapidity minimum bias Pb+Pb collisions 158A GeV and central 20A, 30A, 40A, 80A beam energies in the fixed target experiment NA49 CERN SPS. rapidity density $\mathit{dn}/\mathit{dy}$, inverse slope parameter T, mean $\ensuremath{\langle}{m}_{t}\ensuremath{\rangle}$ derived from studied as a function of incident energy collision centrality compared to relevant data on proton production. shapes $\overline{p}$ p very...
The transverse mass ${m}_{t}$ distributions for deuterons and protons are measured in $\text{Pb}+\text{Pb}$ reactions near midrapidity the range $0<{m}_{t}\ensuremath{-}m<1.0\phantom{\rule{0.3em}{0ex}}(1.5)\phantom{\rule{0.3em}{0ex}}\text{GeV}∕{c}^{2}$ minimum bias collisions at $158A\phantom{\rule{0.3em}{0ex}}\text{GeV}$ central 40 $80\phantom{\rule{0.3em}{0ex}}A\phantom{\rule{0.3em}{0ex}}\text{GeV}$ beam energies. rapidity density $dn∕dy$, inverse slope parameter $T$ mean $⟨{m}_{t}⟩$...
This Letter describes the measurement of energy dependence elliptic flow for charged particles in $\mathrm{Au}+\mathrm{Au}$ collisions using PHOBOS detector at Relativistic Heavy Ion Collider. Data taken collision energies $\sqrt{{s}_{NN}}=19.6$, 62.4, 130, and 200 GeV are shown over a wide range pseudorapidity. These results, when plotted as function ${\ensuremath{\eta}}^{\ensuremath{'}}=|\ensuremath{\eta}|\ensuremath{-}{y}_{\mathrm{beam}}$, scale with approximate linearity throughout...
We present results on two-particle angular correlations in Cu+Cu and Au+Au collisions at a center of mass energy per nucleon pair 200 GeV over broad range pseudorapidity ($\eta$) azimuthal angle ($\phi$) as function collision centrality. The PHOBOS detector RHIC has uniquely-large coverage for inclusive charged particles, which allows the study both long- short-range scales. A complex two-dimensional correlation structure $\Delta \eta$ \phi$ emerges, is interpreted context cluster model....
Production of $d,\phantom{\rule{0.16em}{0ex}}t$, and $^{3}\mathrm{He}$ nuclei in central $\mathrm{Pb}+\mathrm{Pb}$ interactions was studied at five collision energies ($\sqrt{{s}_{NN}}=6.3$, 7.6, 8.8, 12.3, 17.3 GeV) with the NA49 detector CERN Super Proton Synchrotron. Transverse momentum spectra, rapidity distributions, particle ratios were measured. Yields are compared to predictions statistical models. Phase-space distributions light discussed those protons context a coalescence...
The measured pseudorapidity distribution of primary charged particles in minimum-bias d+Au collisions at sqrt[s(NN)]=200 GeV is presented for the first time. This falls off less rapidly gold direction as compared to deuteron direction. average value particle density midrapidity <dN(ch)/d eta>|eta|< or =0.6)=9.4+/-0.7(syst) and integrated multiplicity region 82+/-6(syst). Estimates total production, based on extrapolations outside region, are also presented. distribution, normalized number...
The charged-particle pseudorapidity density for Au+Au collisions at $\sqrt{{s}_{\mathit{NN}}}=62.4$ GeV has been measured over a wide range of impact parameters and compared to results obtained other energies. As function collision energy, the distribution grows systematically both in height width. midrapidity is found grow approximately logarithmically between BNL Alternating Gradient Synchrotron (AGS) energies top Relativistic Heavy Ion Collider (RHIC) energy. There also an approximate...
Production of Lambda and Antilambda hyperons was measured in central Pb-Pb collisions at 40, 80, 158 A$\cdot$GeV beam energy on a fixed target. Transverse mass spectra rapidity distributions are given for all three energies. The $\Lambda/\pi$ ratio mid-rapidity full phase space shows pronounced maximum between the highest AGS 40 SPS energies, whereas $\bar{\Lambda}/\pi$ exhibits monotonic increase.
Results are presented on event-by-event fluctuations in transverse momentum of charged particles, produced at forward rapidities p+p, C+C, Si+Si and Pb+Pb collisions 158 AGeV. Three different characteristics discussed: the average event, Phi_pT fluctuation measure two-particle correlations. In kinematic region explored, dynamical found to be small. However, a significant system size dependence is observed, with largest value measured peripheral interactions. The data compared predictions...