منابع مشابه
Quark participants and global observables
One of the challenges in relativistic heavy ion collisions is to measure and study the large number of particles produced in such reactions. Measurement of particle density and transverse energy density in rapidity is a convenient way to describe particle production in heavy ion collisions. The pseudorapidity density (dN/dη) and transverse energy pseudorapidity density (dET /dη) at mid-rapidity...
متن کاملGlobal Observables at PHENIX
We present PHENIX recent results on charged particle and transverse energy densities measured at mid-rapidity in Au-Au collisions at √ s NN =130 GeV and 200 GeV over broad range of centralities. The mean transverse energy per charged particle is derived. The first PHENIX measurements at √ s NN =19.6 GeV are also presented. A comparison with calculations from various theoretical models is perfor...
متن کاملGlobal Observables at Rhic
Main characteristics of the charged particle dNch/dη and transverse energy dET /dη production measured in Heavy Ion collisions at RHIC energies are presented in this article. Transformation of the pseudo-rapidity shape, relation to the incident energy and centrality profile are described in a systematic way. Centrality profile is shown to be closely bound to the number of nucleons participating...
متن کاملGlobal Observables at RHIC
The first three measurements from the RHIC program were results on global observables: charged particle multiplicity (Nch), transverse energy (ET ) and elliptic flow (v2). They offer a look at the large-scale features of particle production in high-energy nuclear collisions, with particular insight into entropy production and collective behavior. Results from all of the RHIC experiments are dis...
متن کاملAnalysis of ∆(1232) Isobar Observables with Improved Quark Distribution Amplitudes
A model distribution amplitude for the ∆+(1232) isobar is proposed, derived on the basis of the QCD sum-rule calculations of Farrar et al. combined with those of Carlson and Poor. The transition form factor γp∆+ is calculated modeling the proton by selected distribution amplitudes. Furthermore, predictions are made for some exclusive charmonium decays into ∆∆̄. The obtained results are compared ...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2004
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.70.027901