Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-08-02
Phys.Lett. B388 (1996) 10-13
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages 3 Postscript figures, Latex
Scientific paper
10.1016/0370-2693(96)01133-1
It is argued that the experimentally observed strong upward-bending of the logarithm of factorial moments versus that of phase space partition number in the higher-dimensional phase space of nucleus-nucleus collisions is due to the superposition of elementary collision processes in these collisions. A direct implication of this observation is that, at high enough energy and/or density, when the produced particles from individual elementary processes are melted into a unique system the above-mentioned superposition effect will disappear and the factorial moments will not be strongly upward-bending any more. So, the disappearance of strong upward-bending of higher-dimensional factorial moments in heavy ion collision may be taken as a signal for the formation of a unique system, or QGP, in this collision.
Lianshou Liu
Yuan Hu
Yue Deng
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