We study nuclear stopping in high energy nuclear collisions using the constituent quark model. It is assumed that wounded nucleons with a different number of interacted quarks hadronize in different ways. The probabilities of having such wounded nucleons are evaluated for proton-proton, proton-nucleus, and nucleus-nucleus collisions. After examining our model in proton-proton and proton-nucleus collisions and fixing the hadronization functions, it is extended to nucleus-nucleus collisions. It is used to calculate the rapidity distribution and the rapidity shift of final-state protons in nucleus-nucleus collisions. The computed results are in good agreement with the experimental data on [Formula Presented] at [Formula Presented] GeV and [Formula Presented] at [Formula Presented] GeV. Theoretical predictions are also given for proton rapidity distribution in [Formula Presented] at [Formula Presented] GeV (BNL-RHIC). We predict that the nearly baryon-free region will appear in the midrapidity region and the rapidity shift is 〈Δy〉=2.24.
ASJC Scopus subject areas
- Nuclear and High Energy Physics