摘要
用几何模型计算了相对论重离子碰撞中产生的Ｊ／ 在核物质中的吸收长度．由此导得的Ｊ／ 在Ａ－Ａ碰撞中的吸收截面比在ｈ－Ａ过程中明显增大．通过对 与初态相互作用长度的关系的分析，说明了本文结果与过去工作不同的原因．
Based on geometric model the absorption length of produced J/ in nuclear matter for relativistic heavy ion collisions is calculated. The absorption cross section σa.bs of J/ deduced in A-A collisions is considerably higher than that in h-A processes.The reason of obtaining this result different from former works is also discussed in terms of analysing the relation between and the initial interaction length.
出处
《高能物理与核物理》
CSCD
北大核心
1994年第7期652-657,共6页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
关键词
吸收长度
吸收截面
重离子碰撞
J/ suppression,absorption length,absorption cross section
