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　　報告題目: High Energy Hadron Production as Self-Organized Criticality

　　報告人：Prof. Paolo Castorina (Catania University, Italy)

　　時間：2019年4月18日（星期四）10:00

　　地點：近代物理所5號樓1008會議室

　　Abstract:

　　In high energy nuclear collisions, production rates of light nuclei as well as those of hadrons and hadronic resonances agree with the predictions of an ideal gas at a temperature T = 155 ± 10 MeV. In an equilibrium hadronic medium of this temperature, light nuclei cannot survive. We propose that the observed behavior is due to an evolution in global non-equilibrium, leading to self-organized criticality. At the confinement point, the initial quark-gluon medium becomes quenched by the vacuum, breaking up into all allowed free hadronic and nuclear mass states, without formation of any subsequent thermal hadronic medium.