A5088496893- 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
- Radiation Detection and Scintillator Technologies
- Nuclear reactor physics and engineering
- Medical Imaging Techniques and Applications
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Distributed and Parallel Computing Systems
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Cold Atom Physics and Bose-Einstein Condensates
- CCD and CMOS Imaging Sensors
- Nuclear physics research studies
- Gamma-ray bursts and supernovae
- Superconducting Materials and Applications
- International Science and Diplomacy
- Stochastic processes and financial applications
- Gas Dynamics and Kinetic Theory
- Statistical Methods and Bayesian Inference
HUN-REN Wigner Research Centre for Physics
2016-2025
Institute of High Energy Physics
2015-2024
Institute for Particle and Nuclear Physics
2008-2024
University of Antwerp
2024
A. Alikhanyan National Laboratory
2022-2024
HUN-REN Institute for Nuclear Research
2023
Hungarian Academy of Sciences
2007-2019
Center for Migration Studies of New York
2007-2017
Joint Institute for Nuclear Research
2002-2016
European Organization for Nuclear Research
1999-2014
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...
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).
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(+)...
Net proton and negative hadron spectra for central \PbPb collisions at 158 GeV per nucleon the CERN SPS were measured compared to from lighter systems. baryon distributions derived those of net protons, utilizing model calculations isospin contributions as well data strange distributions. Stopping (rapidity shift with respect beam) mean transverse momentum \meanpt baryons increase system size. The rapidity density hadrons scales number participant nucleons nuclear collisions, whereas their...
Proton–nucleus (p+A) collisions have long been recognized as a crucial component of the physics program with nuclear beams at high energies, in particular for their reference role to interpret and understand nucleus–nucleus data well potential elucidate partonic structure matter low parton fractional momenta (small-x). Here, we summarize main motivations that make proton–nucleus run decisive ingredient successful heavy-ion Large Hadron Collider (LHC) present unique scientific opportunities...
The directed and elliptic flow of protons charged pions has been observed from the semicentral collisions a 158 GeV/nucleon Pb beam with target. rapidity transverse momentum dependence measured. is opposite to that but both exhibit negative at low pt. fairly independent rises pt.Received 10 November 1997DOI:https://doi.org/10.1103/PhysRevLett.80.4136©1998 American Physical Society
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...
Measurements of the forward and transverse energy in 158 GeV per nucleon $^{208}\mathrm{Pb}$ + Pb collisions are presented. A total about 1 TeV is created central collisions. An density 3 GeV/${\mathrm{fm}}^{3}$ estimated for near head-on Only statistical fluctuations seen ratio electromagnetic to hadronic energy.
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 $⟨{m}_{t}⟩$...
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 yields of (anti)protons were measured by the NA49 Collaboration in centrality-selected Pb $+$ collisions at $40A$ and $158A$ GeV. Particle identification was obtained laboratory momentum range from 5 to 63 GeV$/c$ measuring energy loss $dE/dx$ time projection chamber detector gas. corresponding rapidity coverage extends 1.6 units midrapidity into forward hemisphere. Transverse-mass spectra, dependences average transverse mass, density distributions studied as a function collision...
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...
We look for fluctuations expected the QCD critical point using an intermittency analysis in transverse momentum phase space of protons produced around midrapidity 12.5 % most central C+C, Si+Si and Pb+Pb collisions at maximum SPS energy 158A GeV. find evidence power-law data. The fitted exponent $$\phi _{2} = 0.96^{+0.38}_{-0.25}\text { (stat.)}$$ $$\pm $$ $$0.16\text (syst.)}$$ is consistent with value fluctuations. Power-law had previously also been observed low-mass $$\pi ^+ \pi ^-$$...
We present the first measurement of fluctuations from event to in production strange particles collisions heavy nuclei. The ratio charged kaons pions is determined for individual central Pb+Pb collisions. After accounting due detector resolution and finite number statistics we derive an upper limit on genuine nonstatistical fluctuations, which could be related a first- or second-order QCD phase transition. Such are shown very small.
We present measurements of the energy dependence event-by-event fluctuations in K/pi and (p + \bar{p})/pi multiplicity ratios heavy ion collisions at CERN SPS. The particle ratio were obtained for central Pb+Pb five collision energies, \sqrt{s_{_{NN}}}, between 6.3 17.3 GeV. After accounting effects finite-number statistics detector resolution, we extract strength non-statistical each energy. For ratio, larger than expected independent production are found all energies. smaller expectations...
The European Particle Physics Strategy Update (EPPSU) process takes a bottom-up approach, whereby the community is first invited to submit proposals (also called inputs) for projects that it would like see realised in near-term, mid-term and longer-term future. National inputs as well from Laboratories are also an important element of process. All these then reviewed by Preparatory Group (PPG), whose role organize Symposium around submitted ideas prepare discussion on importance merits...