SOME ASPECTS OF HARD-SCATTERING AT RHIC VERSUS THE COMBINATIONAL APPROACH

Abstract

The contrasting nature of the pT-spectra measured in deuteron ( D )–gold ( Au ) and gold ( Au )–gold ( Au ) collisions, both performed at RHIC-BNL at [Formula: see text], is now considered to be a very stimulating and hot topic in the domain of high energy nuclear physics. In continuation of our efforts to understand the measured data in high energy nuclear collisions in a somewhat nonstandard and alternative way, called the Combinational Approach (CA), we try here first to understand and reproduce the latest observations on deuteron–gold collisions at [Formula: see text] at mid-rapidity and some other rapidity regions with the same. Besides, (i) we also bring out the features of contrast for nuclear modification factor (NMF) in Au Au collisions at [Formula: see text]; (ii) for cross-checking of the present and previous results we also obtain the hadronic ratios measured for only the Au Au collisions at [Formula: see text], as the data on the similar ratios for D Au interactions are not yet available. Finally, we point out the implications of the approach in terms of both data-interpretation and physical insights.