Possible Manifestation of Quark-Gluon Plasma in Multiplicity Distributions from High-Energy Reactions

Abstract

We show that in order to explain the observed dependence of multiplicity distributions on energy and shifts of the centers of rapidity bins it is sufficient to assume the existence of two sources. One source is concentrated at small rapidities and has properties of a thermally equilibrated system as could be expected from a quark-gluon plasma. The other one, contributing to the whole rapidity region, displays characteristics of bremsstrahlung emission.

The Rapidity Distributions and the Thermalization Induced Transverse Momentum Distributions in Au-Au Collisions at RHIC Energies

“…The solid dots are the experimental measurements [16][17][18]. The solid curves are the results from (9). It can be seen that, except for proton , the theoretical predictions are in good agreement with experimental data.…”

“…The solid dots are the experimental data [19]. The solid curves are the hydrodynamic results of (9). listed in Tables 1 and 2.…”

“…Further studies have shown that QGP might be indeed generated in these collisions [4][5][6][7]. In fact, it has long been argued that QGP might even have come into being in − ( ) collisions at the energies of Intersecting Storage Rings (ISR) and Super Proton Synchrotron (SPS) at CERN [8][9][10][11][12].…”

Multiplicity fluctuations in finite rapidity windows. Intermittency or quantum statistical correlation?

“…It can be shown [16] that, for reasonable assumptions about ~~ (e.g., guided by the results of ref. [26]), the only change occurs in the expressions for the Bq(/3) and Bq(/3) and implies a small correction in the right direction.…”

A Hydrodynamic Model Including Phase Transition and the Thermal Motion Induced Transverse Momentum Distributions in p-p Collisions at LHC Energies

“…By using Equations (15), (17), and (18)- (20), together with the definitions in Equation (13) in the considered collisions, the abundances of particle and antiparticle are approximately equal to each other [3]. This can be clearly seen in Figure 1.…”