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; Suranaree Univ Technol, Sch Phys, Nakhon Ratchasima 30000, Thailand; CCAST, World Lab, Beijing 100080, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要:
The phi meson productions in Au+Au and/or Pb+Pb collisions at AGS, SPS, RHIC, and LHC energies have been studied systematically with a hadron and string cascade model LUCIAE. After considering the energy dependence of the model parameter alpha in string fragmentation function and adjusting it to the experimental data of charged multiplicity to a certain extent, the model predictions for phi meson yield, rapidity, and transverse mass distributions are compatible with the experimental data at AGS, SPS and RHIC energies. A calculation for Pb+Pb collisions at LHC energy is given as well. The obtained fractional variable in string fragmentation function shows a saturation in energy dependence. It, is discussed that the saturation of fractional variable in string fragmentation function might be a qualitative representation of the energy dependence of nuclear transparency.
Sa, BH,Cai, X,Kobdaj, C,et al. Energy dependence of string fragmentation function and meson production[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2004,41(2):291-295.
