UrQMD calculations of two-pion HBT correlations in central Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV

Abstract

Two-pion Hanbury-Brown-Twiss (HBT) correlations for central Pb-Pb collisions at the Large-Hadron-Collider (LHC) energy of $\sqrt{s_{NN}}=2.76$ TeV are investigated for the first time with the microscopic transport model UrQMD (Ultra-relativistic Quantum Molecular Dynamics). The transverse momentum dependence of the Pratt-Bertsch HBT radii is extracted from a three dimensional Gaussian fit to the correlator in the longitudinal co-moving system (LCMS). Qualitative agreement with the ALICE data is obtained, however $R_{out}$ is overpredicted by nearly 50%. The LHC results are also compared to data from the STAR experiment at RHIC. For both energies we find that the calculated $R_O/R_S$ ratio is always larger than data, indicating that the emission in the model is less explosive than observed in the data.

arXiv comment11 pages, 3 figures, wording improvements, updated references

References in corpus (21)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• Femtoscopy in Relativistic Heavy Ion Collisions: Two Decades of Progress
• The Physics of Ultraperipheral Collisions at the LHC
• Fully integrated transport approach to heavy ion reactions with an intermediate hydrodynamic stage
• Physics Interplay of the LHC and the ILC
• Particle Interferometry for Relativistic Heavy-Ion Collisions
• Two-pion Bose-Einstein correlations in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Pion interferometry in Au+Au collisions at $\sqrt{{\mathrm{s}}_{{}_{\mathrm{NN}}}}$ = 200 GeV
• Partonic Effects on Pion Interferometry at the Relativistic Heavy Ion Collider
• Femtoscopy of pp collisions at $\sqrt{s}$=0.9 and 7 TeV at the LHC with two-pion Bose-Einstein correlations
• An effective chiral Hadron-Quark Equation of State
• The effect of "pre-formed" hadron potentials on the dynamics of heavy ion collisions and the HBT puzzle
• Effects of a phase transition on HBT correlations in an integrated Boltzmann+Hydrodynamics approach
• Charged particle (pseudo-)rapidity distributions in proton+anti-proton/proton+proton and Pb+Pb/Au+Au collisions from SPS to LHC energies from UrQMD
• Identified Particle Spectra and Anisotropic Flow in an Event-by-Event Hybrid Approach in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Core-corona separation in the UrQMD hybrid model
• A model comparison of resonance lifetime modifications, a soft equation of state and non-Gaussian effects on $\pi -\pi$ correlations at FAIR/AGS energies
• Femtoscopic scales in central A+A collisions at RHIC and LHC energies in hydrokinetic model

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• A twisted emission geometry in non-central Pb+Pb collisions measurable via azimuthally sensitive HBT
• UrQMD calculations of two-pion HBT correlations in p+p and Pb+Pb collisions at LHC energies
• Effect of the spin-orbit interaction on flows in heavy-ion collisions at intermediate energies
• Formation time dependence of femtoscopic $\pi \pi$ correlations in p+p collisions at $\sqrt{s_{NN}}$=7 TeV
• Simulation of energy scan of pion interferometry in central Au + Au collisions at relativistic energies