Zi-Wei Lin

Multiphase transport model for relativistic heavy ion collisions

We describe in detail how the different components of a multiphase transport (AMPT) model that uses the heavy ion jet interaction generator (HIJING) for generating the initial conditions, Zhangs parton cascade (ZPC) for modeling partonic scatterings, the Lund string fragmentation model or a quark coalescence model for hadronization, and a relativistic transport (ART) model for treating hadronic scatterings are improved and combined to give a coherent description of the dynamics of relativistic heavy ion collisions. We also explain the way parameters in the model are determined and discuss the sensitivity of predicted results to physical input in the model. Comparisons of these results to experimental data, mainly from heavy ion collisions at the BNL Relativistic Heavy Ion Collider, are then made in order to extract information on the properties of the hot dense matter formed in these collisions.

Multiphase transport model for relativistic nuclear collisions

To study heavy ion collisions at energies available from the Relativistic Heavy Ion Collider, we have developed a multi-phase transport model that includes both initial partonic and final hadronic interactions. Specifically, the parton cascade model ZPC, which uses as input the parton distribution from the HIJING model, is extended to include the quark-gluon to hadronic matter transition and also final-state hadronic interactions based on the ART model. Predictions of the model for central Au on Au collisions at RHIC are reported. 25.75.-q, 24.10.Lx, 24.10.Jv Typeset using REVTEX Email: bzhang@kopc1.tamu.edu Email: ko@comp.tamu.edu Email: bali@navajo.astate.edu Email: lin@kopc1.tamu.edu

Predictions for

Predictions for charged hadron, identified light hadron, quarkonium, photon, jet and gauge bosons in p+Pb collisions at sqrt s_NN = 5 TeV are compiled and compared. When test run data are available, they are compared to the model predictions.

p+

The elliptic flow in heavy ion collisions at the Relativistic Heavy Ion Collider is studied in a multiphase transport model. By converting the strings in the high energy density regions into partons, we find that the final elliptic flow is sensitive to the parton scattering cross section. To reproduce the large elliptic flow observed in Au+Au collisions at

Pb Collisions at sqrt s_NN = 5 TeV

\sqrt{s}=130 A\mathrm{GeV}

Partonic effects on the elliptic flow at relativistic heavy ion collisions

requires a parton scattering cross section of about 6 mb. We also study the dependence of the elliptic flow on the particle multiplicity, transverse momentum, and particle mass.

A Model for J / psi absorption in hadronic matter

The cross sections for

Partonic effects on pion interferometry at the Relativistic Heavy-Ion Collider

J/\psi

Charged particle rapidity distributions at relativistic energies

absorption by

Quark coalescence and elliptic flow of charm hadrons

\pi