1997/11/05 by Xiao-Fei Zhang, Zhang, Xiao-Fei, Cong‐Feng Qiao +7
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear physics research studies #Nuclear reactor physics and engineering #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9711237
Revtex, 17 pages, 7 figures
arxiv created 1997/11/05 · openalex publication_date 1997/11/05 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
J/ψ and ψ' production cross sections in fixed-target experiment is calculated, considering the contributions from both color-singlet and color-octet mechanisms.The results are applied to the investigations of the J/ψ suppression and the ψ'/ψ ratio problems in p-A collisions. The results agree with the experimental data as the (c c)-nucleon absorption cross sections σabs8≃ 10mb for (c c)8 and σabs1≃ 0mb for (c c)1. The model is further used to investigate A-A collisions when comover absorption mechanism is also considered. It is found that the observed experiment data of J/ψ and ψ'/ψ ratio in S-U collisions and Pb-Pb collisions can not be explained consistently within this model. The possibility of QGP formation in S-U and Pb-Pb collisions is also discussed.