image production in image collisions at image in the recombination model

We first determine c and image shower parton distributions in jets induced by light and charm hard partons in the framework of the recombination model from relevant fragmentation functions. The shower parton distributions can be used to calculate other fragmentation functions and study charmed hadron production in other collisions. When the distributions are applied to reproduce the image production in image collisions at image, energy loss effect is taken into account for image production due to its momentum loss in traversing the dense medium. We find that the contribution of thermal–shower parton recombination dominates over other mechanisms of hadronization in the region of image. The calculated image transverse momentum spectrum is in good agreement with the experimental data.