Investigations of J/Ψ Anomalous Suppressions in Pb-Pb Collisions at 158 AGeV/c
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摘要: 在核吸收与随动者吸收理论的基础上, 给出了在有QGP相变情况下高能重离子碰撞中的J/Ψ微分产生截面,并用其讨论了CERN的NA50合作组给出的入射动量为158 AGeV/c 的Pb-Pb碰撞中的J/Ψ反常抑制现象。理论较好地解释了实验结果。On the basis of nuclear and comover absorption theories, we have derived out the differential cross section of J/Ψ production in high-energy heavy-ion collisions under the situation that QGP phase transition occurs, and analyzed the experimental data of NA50 Collaboration at CERN in Pb-Pb collisions at 158 AGeV/c. Our theory favors the data well.Abstract: On the basis of nuclear and comover absorption theories, we have derived out the differential cross section of J/Ψ production in high-energy heavy-ion collisions under the situation that QGP phase transition occurs, and analyzed the experimental data of NA50 Collaboration at CERN in Pb-Pb collisions at 158 AGeV/c. Our theory favors the data well.
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Key words:
- J/Ψ anomalous suppression /
- nuclear absorption /
- comover
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