Two components in charged particle production in heavy-ion collisions

Abstract

Transverse momentum spectra of charged particle production in heavy-ion collisions are considered in terms of a recently introduced Two Component parameterization combining exponential ("soft") and power-law ("hard") functional forms. The charged hadron densities calculated separately for them are plotted versus number of participating nucleons, $N_{part}$. The obtained dependences are discussed and the possible link between the two component parameterization introduced by the authors and the two component model historically used for the case of heavy-ion collisions is established. Next, the variations of the parameters of the introduced approach with the center of mass energy and centrality are studied using the available data from RHIC and LHC experiments. The spectra shapes are found to show universal dependences on $N_{part}$ for all investigated collision energies.

a version as to appear in NPB after editorial comments

References in corpus (5)

• Centrality determination of Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV with ALICE
• Centrality dependence of charged particle production at large transverse momentum in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Transverse-energy distributions at midrapidity in $p$$+$$p$, $d$$+$Au, and Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=62.4$--200~GeV and implications for particle-production models
• Role of quarks in hadroproduction in high energy collisions
• Hydrodynamic extension of the two component model for hadroproduction in heavy-ion collisions

Cited by in corpus (5)

• Role of nuclear gluon distribution on particle production in heavy ion collisions
• Description of Charged Particle Pseudorapidity Distributions in Pb+Pb Collisions with Tsallis Thermodynamics
• Pseudorapidity distributions of charged particles in pp($\overline{\mathrm{p}}$), p(d)A and AA collisions using Tsallis thermodynamics
• A new two-component model for hadron production in heavy-ion collisions
• A three component model for hadron $p_{\mathrm{T}}$-spectra in pp and Pb-Pb collisions at the LHC