Zhou Dai-Mei

Centrality bin size dependence of multiplicity correlation in central Au + Au collisions at √sNN = 200 GeV

We have studied the centrality bin size dependence of charged particle forward-backward multiplicity correlation strength in 5%, 0-5%, and 0-10% most central Au+Au collisions at {radical}(s{sub NN})=200 GeV with a parton and hadron cascade model, PACIAE based on PYTHIA. The real (total), statistical, and negative binomial distribution (NBD) correlation strengths are calculated by the real events, the mixed events, and fitting the charged particle multiplicity distribution to the NBD, respectively. It turned out that the correlation strength increases with increasing centrality bin size monotonously. If the discrepancy between real (total) and statistical correlation strengths is identified as dynamical one, the dynamical correlation may just be a few percent of the total (real) correlation.

Strange quark suppression and strange hadron production in pp collisions at energies available at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider

The parton and hadron cascade model PACIAE based on PYTHIA is utilized to systematically investigate strange particle production in pp collisions at the RHIC and LHC energies. Globally speaking, the PACIAE results of the strange particle rapidity density at mid-rapidity and the transverse momentum distribution are better than PYTHIA (default) in comparing with STAR and ALICE experimental data. This may represent the importance of the parton and hadron rescatterings, as well as the reduction mechanism of strange quark suppression, added in the PACIAE model. The K/π ratios as a function of reaction energy in pp collisions from SPS to LHC energies are also analyzed in this paper.

Correlations and fluctuations in high energy heavy ion collision experiments

An overview of research status of soft physics in high energy heavy-ion collision experiments and recent experimental results are presented. The experimental status on fluctuations and correlations has been reviewed and the outlook for research status of soft physics in LHC/ALICE has been introduced in this paper.

Net charge fluctuation and string fragmentation

We present simulation results of net charge fluctuation in

Energy dependence of string fragmentation function and meson production

Au+Au

Parton Rescattering Effect on the Charged Hadron Forward-Backward Multiplicity Correlation in pp Collisions at √s = 200 GeV

collisions at

Collision geometry and particle production in high energy heavy ion collision experiments

\sqrt{s_{nn}}

Collective expansion and hadronization in high energy heavy ion collision experiments

=130 GeV from a dynamic model, JPCIAE. The calculations are done for the quark-gluon phase before hadronization, the pion gas, the resonance pion gas from

Charged multiplicity density and number of participant nucleons in relativistic nuclear collisions

\rho

Fluctuations of K/π Ratios in Pb-Pb Collisions at Super Proton Synchrotron Energies

and