Effective-energy budget in multiparticle production in nuclear collisions

Abstract

The dependencies of charged particle pseudorapidity density and transverse energy pseudorapidity density at midrapidity on the collision energy and on the number of nucleon participants, or centrality, measured in nucleus-nucleus collisions are studied in the energy range spanning a few GeV to a few TeV per nucleon. The model in which the multiparticle production is driven by the dissipating effective energy of participants is introduced. The model is based on the earlier proposed approach, combining the constituent quark picture together with Landau relativistic hydrodynamics shown to interrelate the measurements from different types of collisions. Within this model, the dependence on the number of participants in heavy-ion collisions are found to be well described in terms of the effective energy defined as a centrality-dependent fraction of the collision energy. For both variables under study, the effective energy approach reveals a similarity in the energy dependence obtained for the most central collisions and centrality data in the entire available energy range. Predictions are made for the investigated dependencies for the forthcoming higher energy measurements in heavy-ion collisions at the LHC.

Regular article, Replaced with published version

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Cited by in corpus (13)

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• Charged Particle and Photon Multiplicity, and Transverse Energy Production in High-Energy Heavy-Ion Collisions
• Analytical Solutions of Landau (1+1)-Dimensional Hydrodynamics
• A correlated-cluster model and the ridge phenomenon in hadron-hadron collisions
• Dependence of temperatures and kinetic freeze-out volume on centrality in Au-Au and Pb-Pb collisions at high energy
• Dependence of related parameters on centrality and mass in a new treatment for transverse momentum spectra in high energy collisions
• An energy independent scaling of transverse momentum spectra of direct (prompt) photons from two-body processes in high-energy proton-proton collisions
• Chemical potentials of light hadrons and quarks from yield ratios of negative to positive particles in high energy $pp$ collisions
• Event patterns extracted from anisotropic spectra of charged particles produced in Pb-Pb collisions at 2.76 TeV
• Random statistical analysis of transverse momentum spectra of strange particles and dependence of related parameters on centrality in high energy collisions at the LHC
• A description of pseudorapidity distributions of charged particles produced in Au+Au collisions at RHIC energies
• A description of the transverse momentum distributions of charged particles produced in heavy ion collisions at RHIC and LHC energies
• Multiparticle production in nuclear collisions using effective-energy approach