Sa, BH , China Inst Atom Energy, POB 275 18, Beijing 102413, Peoples R China.
部门归属:
China Inst Atom Energy, Beijing 102413, Peoples R China; Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China; CCAST, World Lab, Beijing 100080, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要:
The energy and centrality dependencies of charged particle pseudorapidity density in relativistic nuclear collisions were studied using a hadron and string cascade model, JPCIAE. Both the. relativistic p + (p) over bar experimental data and the PHOBOS and PHENIX Au+Au data at RHIC energy could be fairly reproduced within the framework of JPCIAE model and without retuning the model parameters. The predictions for Pb + Pb collisions at the LHC energy were also given. We computed the participant nucleon. distributions using different methods. It was found that the number of participant nucleons is not a well defined variable both experimentally and theoretically. Thus it may be inappropriate to use the charged particle pseudorapidity density per participant pair as a function of the number of participant nucleons for distinguishing various theoretical models.
Sa, BH,Cai, X,Zhou, DM. Charged multiplicity density and number of participant nucleons in relativistic nuclear collisions[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2003,39(2):212-218.
