Abstract
Hadron production consists of two main channels in the intermediate-pT region at RHIC and LHC energies: parton coalescence/recombination and jet fragmentation. The relative contributions of these two channels change with increasing parton density connected to increasing atomic numbers of colliding nuclei and increasing collective behavior. Near-side hadron–hadron correlations carry information about these mechanisms, especially the proton-to-pion ratio. We have studied the dependence of this specific hadron ratio and discuss the possible experimental observables to determine the contributions of parton coalescence and jet fragmentation channels.
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