Abstract
The special role of multiparticle production phenomenology to be played in quark-gluon plasma (QGP) search in ultrarelativistic heavy ion collisions is discussed referring to some latest results obtained from a statistical model, constituent quark model and collective quark-tube model (CQTM). It is found that CQTM is useful to estimate the mean hadron multiplicities in nucleus-nucleus collisions at high energies when hadron production takes place via a normal mechanism without QGP formation. CQTM predictions for the mean multiplicities at RHIC and LHC regions are found to be in good agreement with the parton cascade result by Geiger. A possibility of utilizing the hadron multiplicity as a signal for QGP is discussed.
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