Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-04-01
Phys.Rev. C60 (1999) 054904
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages (Latex) + 24 figures (ps file), submitted to Phys. Rev. C
Scientific paper
10.1103/PhysRevC.60.054904
The critical behaviors of quark-hadron phase transition are explored by use of the Ising model adapted for hadron production. Various measures involving the fluctuations of the produced hadrons in bins of various sizes are examined with the aim of quantifying the clustering properties that are universal features of all critical phenomena. Some of the measures involve wavelet analysis. Two of the measures are found to exhibit the canonical power-law behavior near the critical temperature. The effect of final-state randomization is studied by requiring the produced particles to take random walks in the transverse plane. It is demonstrated that for the measures considered the dependence on the randomization process is weak. Since temperature is not a directly measurable variable, the average hadronic density of a portion of each event is used as the control variable that is measurable. The event-to-event fluctuations are taken into account in the study of the dependence of the chosen measures on that control variable. Phenomenologically verifiable critical behaviors are found and are proposed for use as a signature of quark-hadron phase transition in relativistic heavy-ion collisions.
Hwa Rudolph C.
Wu Yihong
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