Energy Dependence of String Fragmentation Function and φ Meson Production
- 期刊名字:理論物理通訊
- 文件大小:
- 論文作者:SA Ben-Hao,CAI Xu,Chinorat Kob
- 作者單位:China Institute of Atomic Energy,Institute of Particle Physics,CCAST (World Laboratory),Institute of Theoretical Physics
- 更新時間:2022-11-28
- 下載次數(shù):次
The φ meson productions in A u+A u and/or P b+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 α in string fragmentation function and adjusting it to the experimental data of charged multiplicity to a certain extent, the model predictions for φ 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.
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