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.
The coupling Schrodinger equations describing the evolution of cc over-bar 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.
出处
《高能物理与核物理》
EI
CSCD
北大核心
2005年第5期442-446,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金(19925519,10135030)
国家重大基础研究发展规划项目(G2000077407)资助~~
