摘要
对高山乳胶室方位角各向异性的γ族事例可能的形成机制做了探讨.采用D-ND模型和SD-SH模型对族现象进行了Monte-Carlo模拟,得到了与Pamir实验相符的各向异性度分布及高各向异性度事例率.指出,产生碎裂区少体粒子的衍射过程对γ族各向异性有重要贡献,是共线事例的主要成因.而QCD jet产生对γ族的各向异性的效应并不重要.
The azimuthal anisotropy of gamma-family events obtained by mountain emulsion chambers is studied. Adopted D-ND and SD-SH models, gamma-family phenomena are simulated and the simulation reproduces anisotro pi(?)al events with adequate frequency. The study indicates that the few-particle diffractive production in fragmentation region mainly accounts for the azimuthal anisotropical even(?)s. QCD-jet production is shown not to be the main reason of these events.
出处
《高能物理与核物理》
CSCD
北大核心
1989年第5期476-480,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
