Wounded nucleon, quark, and quark-diquark emission functions versus experimental results from the BNL Relativistic Heavy Ion Collider at GeV
Michał Barej (AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, 30-059 Kraków, Poland); Adam Bzdak (AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, 30-059 Kraków, Poland); Paweł Gutowski (AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, 30-059 Kraków, Poland)
Using the wounded nucleon, quark, and quark-diquark models, we extract the wounded source emission functions from the PHOBOS data for collisions at GeV. We apply these functions to compute charged particle multiplicity distributions as functions of pseudorapidity for , and collisions at the same energy and compare them with experimental data from the PHOBOS and PHENIX Collaborations. In symmetric collisions of heavy nuclei, the obtained distributions differ among the tested models. On the other hand, in asymmetric collisions, all three models give essentially the same distributions. The wounded quark-diquark and quark models are in reasonable agreement with data for all the investigated systems.
