Baryonic Effect on chi_cJ Suppression in Au+Au Collisions at RHIC Energies
arXiv:nucl-th/0612050 · doi:10.1088/0256-307X/21/6/014
Abstract
We predict that initially produced chi_cJ mesons at low transverse momentum in the central rapidity region are almost dissociated by nucleons and antinucleons in hadronic matter produced in central Au+Au collisions at RHIC energies sqrt {s_{NN}}= 130 and 200 GeV. In calculations the nucleon and antinucleon distributions in hadronic matter are results of evolution from their freeze-out distributions which well fit the experimental p_T spectra of proton and antiproton. Any measured chi_cJ mesons at low p_T are generated from deconfined matter and give an explicit proof of regeneration mechanism (recombination mechanism).
10 pages, 3 figures, Latex, a discussion added to the reference