A5029071754- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Nuclear reactor physics and engineering
- Dark Matter and Cosmic Phenomena
- Statistical Methods and Bayesian Inference
- Superconducting Materials and Applications
- Pulsars and Gravitational Waves Research
- Stochastic processes and statistical mechanics
- Nuclear physics research studies
- Cosmology and Gravitation Theories
- Atomic and Molecular Physics
- Computational Physics and Python Applications
- Radiation Effects in Electronics
- Radiation Detection and Scintillator Technologies
- Distributed and Parallel Computing Systems
- Black Holes and Theoretical Physics
- Advanced Data Storage Technologies
- Chemical and Physical Properties of Materials
- Theoretical and Computational Physics
- Surface and Thin Film Phenomena
- Solar and Space Plasma Dynamics
- Particle Accelerators and Free-Electron Lasers
- Spectroscopy Techniques in Biomedical and Chemical Research
National and Kapodistrian University of Athens
2016-2025
A. Alikhanyan National Laboratory
2014-2024
National Nuclear Research Center
2023
Financiadora de Estudos e Projetos
2023
National Council for Scientific and Technological Development
2023
Technical University of Munich
2021
State Innovation Exchange
2019
European Organization for Nuclear Research
2006-2017
Oak Ridge National Laboratory
2011-2014
University of Oslo
2013
Results are presented on hyperon and antihyperon production in Pb–Pb, pPb pBe collisions at 158 GeV/c per nucleon. Λ, Ξ Ω yields have been measured central rapidity medium transverse momentum as functions of the centrality collision. Comparing Pb–Pb to those interactions, strangeness enhancement is observed. The increases with content hyperons, reaching a factor about 20 for collisions.
A measurement of strange baryon and antibaryon production in Pb-Pb collisions has been carried out by the NA57 experiment at CERN SPS, with 40 158 GeV/c beam momentum. Results on $Λ$, $Ξ$ $Ω$ hyperon yields mid-rapidity most central 53% are presented compared those obtained higher energy, same collision centrality range. The $Λ$ $Ξ^-$ per unit rapidity stay roughly constant while $Ω^-$, $\barΛ$, $\barΞ^+$ $\barΩ^+$ increase when going to SPS energy. Hyperon from STAR $\sqrt{s_{NN}}$ = 130...
Results are presented on neutral kaon, hyperon and antihyperon production in Pb-Pb p-Be interactions at 40 GeV/c per nucleon. The enhancement pattern follows the same hierarchy as seen higher energy data - increases with strangeness content of hyperons centrality collision. dependence yields enhancements is steeper than 158 A GeV/c. mid-rapidity discussed.
Photons produced in pp interactions at 450 GeV/c were detected by reconstructing the e+e− pairs of photon conversions a 1 mm thick lead sheet placed front MWPCs OMEGA spectrometer CERN. A soft signal 4.1±0.8 times inner bremsstrahlung prediction was observed forward rapidity region (yc.m.s.⩾1.2), thus extending domain anomalous effect seen already K+p, π+p and π−p interactions.
The NA57 experiment has collected high statistics, purity samples of K0S and Λ, Ξ Ω hyperons produced in Pb–Pb collisions at 158 A GeV/c. In this paper we present a study the transverse mass spectra these particles for sample events corresponding to most central 53% inelastic cross-section. We analyse distributions framework blast-wave model full and, first time SPS, as function event centrality.
In this Letter we present additional experimental characteristics of anomalous soft photon radiation observed in π−p interactions at 280 GeV/c the CERN experiment WA91, together with a re-calculated ratio direct signal to expected level hadronic inner bremsstrahlung, which is found be 5.3±1.0. The other presented characteristics, energy dependence and angular distributions photons, show similarity bremsstrahlung behaviour.
New results on strange baryon and antibaryon production in Pb–Pb collisions at 40 160 GeV per nucleon are presented. In particular, we have increased significantly the statistics of Ξ− samples nucleon. The dependence particle yields spectra collision centrality energy interaction is analysed.
A bstract.T he transverse m assspectra ofK 0 S , and parti cl esproduced i n Pb{ Pb col l si ons at 40 G eV /c have been studi ed for a sam pl e ofevents correspondi ng to the ost central 53% of nel asti c Pb{Pb cross-secti on.W anal yze di stri buti fram ework ofa param eteri zed odeli nspi red by hydrodynam cs.T dependence ofthe freeze-out eters on speci es event ty s scussed com pari sonsw th resul ts hi gher energy are show n.
Enhancements of strange baryon and anti-baryon yields were first observed in Pb–Pb interactions at 160 A GeV/c by WA97. The aim the NA57 experiment is to investigate how these enhancements behave as a function energy, over broader centrality range than that which was available with This paper presents comparison hyperon 40 GeV/c. Preliminary signals for p-Be data are also shown.
The multiplicity of charged particles in the central rapidity region has been measured by NA57 experiment Pb--Pb collisions at CERN SPS two beam momenta: 158 A GeV/{\it c} and 40 c}. value $dN_{ch}/d\eta$ maximum determined its behaviour as a function centrality studied range covered (about 50% inelastic cross section). increases approximately logarithmically with centre mass energy.
The measurement of hadronic resonances with different lifetimes provides a tool to investigate the time interval between chemical and kinetic freeze-out in heavy ion collisions by examining influence hot dense matter on resonance yields properties. same studies are necessary pp order provide baseline for ions. Simulated events at 14 TeV have been analyzed estimate capabilities ALICE experiment Λ(1520) detection. results show that reconstruction this will be possible reasonable significance.
Identified hadron spectra are considered to be sensitive the transport properties of strongly interacting matter produced in high-energy nucleus-nucleus collisions. π0 and η mesons ALICE identified via their two-photon decays by using calorimeters central tracking system. In latter, photons measured conversion electron-positron pairs material inner barrel detectors. The production pp, p–Pb Pb–Pb collisions at mid–rapidity over a wide pT range will presented available Large Hadron Collider...