【摘要】 用微扰方法系统求解了c c 各态之间的耦合Schroedinger方程,讨论了粲粒子的形成时间和核吸收的关联.通过计算J/Ψ及Ψ′在不同核子-核过程中的压低并与实验结果比较,发现形成时间对J/Ψ,特别是Ψ′的核吸收过程有重要的影响.更多还原

【Abstract】 The coupling Schrdinger equations describing the evolution of c states in nuclear matter are analytically and systematically solved via perturbation method,and the correlation between charmonium formation and nuclear absorption is investigated.After calculating J/Ψ and Ψ′ suppression in nucleon-nucleus collisions and comparing with experiment data, it is found that the formation time effect plays an important rule in charmonium suppression, especially in Ψ′suppression.更多还原