Energy Dependence of String Fragmentation Function and ϕ Meson Production

• Published in: Communications in theoretical physics Vol. 41; no. 2; pp. 291 - 295
• Main Authors: Ben-Hao, Sa, Xu, Cai, Kobdaj, Chinorat, Zhong-Qi, Wang, Yu-Peng, Yan, Dai-Mei, Zhou
• Format: Journal Article
• Language: English
• Published: China Institute of Atomic Energy, P.O. Box 275 , Beijing,102413, China 15.02.2004; CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China%School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand%China Institute of Atomic Energy, P.O. Box 275 , Beijing,102413, China%Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China; CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China; Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China; Institute of Theoretical Physics, Acad%Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China
• Subjects: fractional variable; φ meson production; string fragmentation function; LUCIAE model
• ISSN: 0253-6102
• DOI: 10.1088/0253-6102/41/2/291

O4; 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.