De-Confinement in small systems: Clustering of color sources in high multiplicity $\bar{p}$p collisions at $\sqrt{s}$= 1.8 TeV

Abstract

It is shown that de-confinement can be achieved in high multiplicity non jet $\bar{p}$p collisions at $\sqrt{s}$= 1.8 TeV Fermi National Accelerator Laboratory(FNAL- E735) experiment. Previously the evidence for de-confinement was the demonstrated by the constant freeze out energy density in high multiplicity events. In this paper we use the same data but analyze the transverse momentum spectrum in the framework of the clustering of color sources. The charged particle pseudorapidities densities in the range 7.0 $\le ⟨d{N}_c/d\eta ⟩\le$26.0 are considered. Results are presented for both thermodynamic and transport properties. The initial temperature and energy density are obtained and compared with the Lattice Quantum Chromo Dynamics(LQCD) simulations. The energy density ($\epsilon /T^4$) $\sim$ 11.5 for $⟨d{N}_c/d\eta ⟩\sim$ 25.0 is close to the value for 0-10\% central events in Au+Au collisions at $\sqrt{s_{NN}}$= 200 GeV. The shear viscosity to entropy density ratio($\eta /s$) is $\sim$ 0.2 at the transition temperature. The result for the trace anomaly $\Delta$ is in excellent agreement with LQCD simulations. These results confirm our earlier observation that the de-confined state of matter was created in high multiplicity events in $\bar{p}$p collisions at $\sqrt{s}$=1.8 TeV.

7 pages, 5 figures

References in corpus (9)

• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Equation of state and QCD transition at finite temperature
• De-Confinement and Clustering of Color Sources in Nuclear Collisions
• Percolation of color sources and critical temperature
• String Percolation and the Glasma
• Percolation of Color Sources and the determination of the Equation of State of the Quark-Gluon Plasma (QGP) produced in central Au-Au collisions at \sqrt S_{NN}= 200 GeV
• A unified description of the reaction dynamics from pp to pA to AA collisions
• Onset of the ridge structure in AA, pA and pp collisions

Cited by in corpus (29)

• Initial, effective, and kinetic freeze-out temperatures from transverse momentum spectra in high energy proton(deuteron)-nucleus and nucleus-nucleus collisions
• De-Confinement in high multiplicity proton-proton collisions at LHC energies
• Energy and Centrality Dependent Study of Deconfinement Phase Transition in a Color String Percolation Approach at RHIC Energies
• Centrality dependence of kinetic freeze-out temperature and transverse flow velocity in high energy nuclear collisions
• Thermodynamic and transport properties in Au + Au collisions at RHIC energies from the clustering of color strings
• Heavy-ion physics at the LHC: Review of Run I results
• Extraction of different temperatures and kinetic freeze-out volume in high energy collisions
• Electrical conductivity of Hot and Dense QCD matter at RHIC BES energies: A Color String Percolation Approach
• Initial and final state temperatures of antiproton emission sources in high energy collisions
• Kinetic freeze-out properties from transverse momentum spectra of pions in high energy proton-proton collisions
• Initial-state temperature of light meson emission source from squared momentum transfer spectra in high-energy collisions
• Dependence of temperatures and kinetic freeze-out volume on centrality in Au-Au and Pb-Pb collisions at high energy
• Wiedemann-Franz Law For Hot QCD Matter in a Color String Percolation Scenario
• Excitation function of initial temperature of heavy flavor quarkonium emission source in high energy collisions
• Initial- and final-state temperatures of emission source from differential cross-section in squared momentum transfer in high energy collisions
• Geometry and space-time extent of pion emission region at FCC energies
• Rapidity and Energy Dependences of Temperatures and Volume Extracted from Identified Charged Hadron Spectra in Proton-Proton Collisions at a Super Proton Synchrotron (SPS)
• Excitation functions of related parameters from transverse momentum (mass) spectra in high energy collisions
• Particle species and energy dependencies of freeze-out parameters in high-energy proton-proton collisions
• Effect of an anisotropic escape mechanism on elliptic flow in relativistic heavy-ion collisions
• Comparing effective temperatures in standard, Tsallis, and q-dual statistics from transverse momentum spectra of identified light charged hadrons produced in gold--gold collisions at RHIC energies
• Excitation functions of related temperatures of η and η0 emission sources from squared momentum transfer spectra in high-energy collisions
• Analyzing the Correlation Between Thermal and Kinematic Parameters in Various Multiplicity Classes within 7 and 13 TeV pp Collisions
• Rapidity dependent transverse momentum spectra of heavy quarkonia produced in small collision systems at the LHC
• Viscosity of non equilibrium hot $\&$ dense QCD drop formed at LHC
• On Extracting Thermal Parameters and Scenario in High-Energy Collisions
• Multiparticle production and initial quasi-temperature from proton induced carbon collisions at $p_{Lab}=31$ GeV/$c$
• Levy distributions for one-dimensional analysis of the Bose-Einstein correlations
• Review of recent results on heavy-ion physics and astroparticle physics in ALICE at the LHC