Energy dependence of string fragmentation function and $φ$ meson production

Details Energy dependence of string fragmentation function and $φ$ meson production Energy dependence of string fragmentation function and $φ$ meson production

2002-05-30

arxiv.org/abs/nucl-th/0205078v1

Commun.Theor.Phys. 41 (2004) 291-295

Physics

Nuclear Physics

Nuclear Theory

8 pages, 3 figures

Scientific paper

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/or 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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