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LUND面积定律对J/ψ非微扰强衰变的描述
Description of LUND Area Law to J/ψ Non-perturbative Hadronic Decay
【摘要】 基于微扰QCD所预言的J/ψ衰变道胶子分布及其分支截面和LUND弦碎裂模型强子化面积定律的严格解,得到J/ψ所有衰变模式的微扰和非微扰过程的一种可能的描述,相应的Monte Carlo产生器LUARLW所作的初步模拟结果与BES获取的J/ψ数据的多种带电粒子谱分布和事例形状拓扑分布符合较好。
【Abstract】 Based on the perturbative QCD predictions of gluonic distributions and branch cross section of the J/(?) decay via hadronic, electromagnetic,and radiative channels, the strict solutions of LUND area law of string fragmentation had-ronization are used to treat nonperturbative hadronic production processes, a possible description and Monte Carlo packet for the J/(?) hadronic decay are obtained. The more than 14 spectra and event shapes of the charged particles simulated by Monte Carlo generator LUARLW agree with BES data well.
【基金】 国家自然科学基金(19805009)
- 【文献出处】 高能物理与核物理 ,High Energy Physics and Nuclear Physics , 编辑部邮箱 ,2003年08期
- 【分类号】O413.1
- 【被引频次】2
- 【下载频次】30