Centrality-dependence of Particle Production at RHIC and the Combinational Approach

Abstract

The newly proposed combinational approach, called the grand combinational model (GCM), as would be described in detail in the text, is still under our careful scrutiny. By applying it, we have attempted to analyze here the characteristics of both the transverse momentum($p_{\mathrm{T}}$)-, and centrality-dependence of production of the main varieties of the secondaries measured in $AuAu$ collisions at BNL-RHIC at both $\sqrt{s_{\mathrm{NN}}}=130$ GeV and $\sqrt{s_{\mathrm{NN}}}=200$ GeV by PHENIX Collaboration. Besides, with the help of it, we have also investigated the nature of centrality-dependence of the average transverse momenta of the various major categories of particles in $AuAu$ collisions at RHIC. The model seems to survive quite smoothly the acid tests of the latest PHENIX data, as it accommodates data modestly well on these twin aspects. The study reveals a kind of universality of nature of the hadronic secondaries and also of the basic particle and nuclear interactions at high energies. However, in the end, we precisely point out both the strengths and limitations of the specific model under consideration here.

arXiv comment13 pages, 17 figures, accepted for publication in EPJA

References in corpus (10)

• Centrality dependence of high pT hadron suppression in Au+Au collisions at sqrt(sNN)=130 GeV
• Scaling behavior at high p_T and the p/pi ratio
• Transverse mass distributions of neutral pions from ${}^{208}$Pb-induced reactions at 158$\cdot A$ GeV
• Results on Identified Hadrons from the PHENIX Experiment at RHIC
• Transverse momentum distributions of neutral pions from nuclear collisions at 200 AGeV
• High $p_T$ Measurements from PHENIX
• Scaling Properties of Pion Production
• Charged Hadron Spectra in PHENIX
• Transverse Momentum Spectra of Pions in Particle and Nuclear Collisions and Some Ratio-Behaviours: Towards A Combinational Approach
• Transverse Mass Distribution Characteristics of ${\pi }^0$ Production in ${}^{208}$Pb-induced Reactions and the Combinational Approach