Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-07-12
Nuovo Cim. B125:1071-1097,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
35 pages, 14 Figures, 4 Tables; Title, Abstract and the text changed; To appear in Il Nuovo Cimento B
Scientific paper
10.1393/ncb/i2010-10913-4
Experiments involving copper-copper collisions at the RHIC-BNL (USA) at energies $\sqrt{s_{NN}}$ = 22.5, 62 and 200 GeV have produced a vast amount of high-precision data which are to be analysed in the light of various competing models in the domain of multiparicle production scenario. We have chosen to analyse here the measured data on the $p_T$ -spectra of various light and non-strange secondaries at various energies mentioned above, some of their very important ratio-behaviours at the various centralities of the collisions and the nuclear modification factors $R_{AA}$ and $R_{CP}$ in the light of a version of the Sequential Chain Model (SCM). The agreements between the measured data and model-based results are generally found to be modestly satisfactory. Besides, our obtained results have also been compared with results based upon two approaches with strong standard model flavour, of which one is purely pQCD-oriented and is forwarded by Vitev.
Bhattacharyya Sudip
Biswas Sunil Kumar
Guptaroy P.
Sau Goutam
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