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Dynamic modeling for heavy-ion collisions
Recent theory progress in (3+1)D dynamical descriptions of relativistic nuclear collisions at finite baryon density are reviewed. Heavy-ion collisions at different collision energies produce strongly coupled nuclear matter to probe the phase structure of Quantum Chromodynamics (QCD). Dynamical frameworks serve as a quantitative tool to study properties of hot QCD matter and map collisions to the QCD phase diagram. Outstanding challenges are highlighted when confronting theoretical models with the current and forthcoming experimental measurements from the RHIC beam energy scan program.
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NSF-PAR ID:
10333919
Journal Name:
EPJ Web of Conferences
Volume:
259
Page Range or eLocation-ID:
02001
ISSN:
2100-014X
We develop a new heavy quark transport model, QLBT, to simulate the dynamical propagation of heavy quarks inside the quark-gluon plasma (QGP) created in relativistic heavy-ion collisions. Our QLBT model is based on the linear Boltzmann transport (LBT) model with the ideal QGP replaced by a collection of quasi-particles to account for the non-perturbative interactions among quarks and gluons of the hot QGP. The thermal masses of quasi-particles are fitted to the equation of state from lattice QCD simulations using the Bayesian statistical analysis method. Combining QLBT with our advanced hybrid fragmentation-coalescence hadronization approach, we calculate the nuclear modification factor$$R_\mathrm {AA}$$${R}_{\mathrm{AA}}$and the elliptic flow$$v_2$$${v}_{2}$ofDmesons at the Relativistic Heavy-Ion Collider and the Large Hadron Collider. By comparing our QLBT calculation to the experimental data on theDmeson$$R_\mathrm {AA}$$${R}_{\mathrm{AA}}$and$$v_2$$${v}_{2}$, we extract the heavy quark transport parameter$$\hat{q}$$$\stackrel{^}{q}$and diffusion coefficient$$D_\mathrm {s}$$${D}_{s}$in the temperature range of$$1-4~T_\mathrm {c}$$$1-4\phantom{\rule{0ex}{0ex}}{T}_{c}$, and compare them with the lattice QCD results and other phenomenological studies.