The effect of "pre-formed" hadron potentials on the dynamics of heavy ion collisions and the HBT puzzle

Abstract

The nuclear stopping, the elliptic flow, and the HBT interferometry are calculated by the UrQMD transport model, in which potentials for "pre-formed" particles (string fragments) from color fluxtube fragmentation as well as for confined particles are considered. This description provides stronger pressure at the early stage and describes these observables better than the default cascade mode (where the "pre-formed" particles from string fragmentation are treated to be free-streaming). It should be stressed that the inclusion of potential interactions pushes down the calculated HBT radius $R_O$ and pulls up the $R_S$ so that the HBT time-related puzzle disappears throughout the energies from AGS, SPS, to RHIC.

arXiv comment6 pages, 4 figures. Accepted for publication in Phys. Lett. B

References in corpus (39)

• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• New Forms of QCD Matter Discovered at RHIC
• What RHIC Experiments and Theory tell us about Properties of Quark-Gluon Plasma ?
• Femtoscopy in Relativistic Heavy Ion Collisions: Two Decades of Progress
• Azimuthal anisotropy in Au+Au collisions at sqrtsNN = 200 GeV
• Energy Dependence of Pion and Kaon Production in Central Pb+Pb Collisions
• Asymptotic perfect fluid dynamics as a consequence of AdS/CFT
• Perfect Fluidity of the Quark Gluon Plasma Core as Seen through its Dissipative Hadronic Corona
• Pion interferometry in Au+Au collisions at $\sqrt{{\mathrm{s}}_{{}_{\mathrm{NN}}}}$ = 200 GeV
• Baryon Stopping and Charged Particle Distributions in Central Pb+Pb Collisions at 158 GeV per Nucleon
• The Time-Delay Signature of Quark-Gluon-Plasma Formation in Relativistic Nuclear Collisions
• Pion Interferometry of $\sqrt{s_{NN}}=130$ GeV Au+Au Collisions at RHIC
• Bose-Einstein Correlations of Charged Pion Pairs in Au+Au Collisions at sqrt(s_NN)=200_ GeV
• Strangeness dynamics and transverse pressure in relativistic nucleus-nucleus collisions
• Partonic Effects on Pion Interferometry at the Relativistic Heavy Ion Collider
• Transverse mass dependence of two-pion correlations in Au+Au collisions at sqrt(s_NN) = 130 GeV
• Momentum dependence of the symmetry potential and nuclear reactions induced by neutron-rich nuclei at RIA
• Anisotropic flow in ultra-relativistic heavy ion collisions
• Dynamical phase trajectories for relativistic nuclear collisions
• Mach shocks induced by partonic jets in expanding quark-gluon plasma
• Mean-Field Effects on Collective Flows in High-Energy Heavy-Ion Collisions at 2-158A GeV energies
• Anisotropy of flow and the order of phase transition in relativistic heavy ion collisions
• Probing the equation of state with pions
• Hadron production in deep inelastic lepton-nucleus scattering
• Suppression of high transverse momentum hadrons at RHIC by (pre-) hadronic final state interactions
• Quenching of hadron spectra in DIS on nuclear targets
• Elliptic Flow Analysis at RHIC: Fluctuations vs. Non-Flow Effects
• Statistical Mechanics of semi-classical colored Objects
• Quantum Opacity, the RHIC HBT Puzzle, and the Chiral Phase Transition
• Analyzing Correlation Functions with Tesseral and Cartesian Spherical Harmonics
• Hanbury-Brown-Twiss Interferometry with Identical Bosons in Relativistic Heavy Ion Collisions: Comparisons with Hadronic Scattering Models
• Fitted HBT radii versus space-time variances in flow-dominated models
• Time Evolution of Jets and Perturbative Color Neutralization
• Excitation Function of Energy Density and Partonic Degrees of Freedom in Relativistic Heavy Ion Collisions
• Transport model analysis of particle correlations in relativistic heavy ion collisions at femtometer scales
• Transport model analysis of the transverse momentum and rapidity dependence of pion interferometry at SPS energies
• Pion freeze-out as seen through HBT correlations in heavy ion collisions from FAIR/AGS to RHIC energies
• Rapidity dependence of Bose-Einstein correlations at SPS energies

Cited by in corpus (37)

• Fully integrated transport approach to heavy ion reactions with an intermediate hydrodynamic stage
• Progress of Quantum Molecular Dynamics model and its applications in Heavy Ion Collisions
• Effects of a phase transition on HBT correlations in an integrated Boltzmann+Hydrodynamics approach
• Mean-field update in the JAM microscopic model: Mean-field effects on collective flow in high-energy heavy-ion collisions at $\sqrt{s_{NN}}=2-20$ GeV energies
• Directed, elliptic and triangular flow of protons in Au+Au reactions at 1.23 AGeV: A theoretical analysis of the recent HADES data
• First, second, third and fourth flow harmonics of deuterons and protons in Au+Au reactions at 1.23 A GeV
• Femtoscopy in Relativistic Heavy Ion Collisions and its Relation to Bulk Properties of QCD Matter
• Examination of scaling of Hanbury-Brown--Twiss radii with charged particle multiplicity
• Directed flow of $\Lambda$ in high-energy heavy-ion collisions and $\Lambda$ potential in dense nuclear matter
• A model comparison of resonance lifetime modifications, a soft equation of state and non-Gaussian effects on $\pi -\pi$ correlations at FAIR/AGS energies
• UrQMD calculations of two-pion HBT correlations in central Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV
• Transport model study of nuclear stopping in heavy ion collisions over an energy range from 0.09A GeV to 160A GeV
• Transport model study of the $m_T$-scaling for $\Lambda$, K, and $\pi$ HBT-correlations
• Rapidity distribution of protons from the potential version of UrQMD model and the traditional coalescence afterburner
• Proton correlations and apparent intermittency in the UrQMD model with hadronic potentials
• Helium-3 production from Pb+Pb collisions at SPS energies with the UrQMD model and the traditional coalescence afterburner
• A twisted emission geometry in non-central Pb+Pb collisions measurable via azimuthally sensitive HBT
• Hadronic observables from Au+Au collisions at s(NN)**(1/2)=200 GeV and Pb+Pb collisions at s(NN)**(1/2)=5.5 TeV from a simple kinematic model
• Study of Rotating High Energy Systems with the Differential HBT Method
• UrQMD calculations of two-pion HBT correlations in p+p and Pb+Pb collisions at LHC energies
• Overview of intermittency analysis in heavy-ion collisions
• Production and rescattering of strange baryons at SPS energies in a transport model with hadron potentials
• Elliptic flow splitting between protons and antiprotons from hadronic potentials
• Formation time dependence of femtoscopic $\pi \pi$ correlations in p+p collisions at $\sqrt{s_{NN}}$=7 TeV
• System-size dependence of the pion freeze-out volume as a potential signature for the phase transition to a Quark Gluon Plasma
• Difficulties in probing density dependent symmetry potential with the HBT interferometry
• Beam energy dependent two-pion interferometry and the freeze-out eccentricity of pions in heavy ion collisions at STAR
• Effects of hadronic mean-field potentials on Hanbury-Brown-Twiss correlations in relativistic heavy-ion collisions
• An explanation of the elliptic flow difference between proton and anti-proton from the UrQMD model with hadron potentials
• Simulation of energy scan of pion interferometry in central Au + Au collisions at relativistic energies
• Beam energy dependence of cumulants of the net-baryon, net-charge and deuteron multiplicity distributions in Au+Au collisions at $\sqrt{s_{NN}}=3.0-5.0$ GeV
• Universal Flow in the Early Stages at RHIC
• Effects of Initial Density Fluctuations on Cumulants in Au + Au Collisions at $\sqrt{s_{NN}}$ = 7.7 GeV
• Unlocking the initial neutron density distribution from the two-pion HBT correlation function in heavy-ion collisions
• Transport Model Comparison Studies of Intermediate-Energy Heavy-Ion Collisions
• Viscosity at RHIC: Theory and Practice
• Study of diffusion coefficients of identified particles at energies available at BNL Relativistic Heavy Ion Collider