摘要
在ｐＱＣＤ的部分子模型和独立碎裂方案的部分子强子化模型基础上，建立了用于超高能宇宙线与空气核相互作用的产生器．通过拟合ＰＰ散射和ｅ＋ｅ－对撞实验数据来决定产生器中的参数．再现了从＝５４６ＧｅＶ到１８００ＧｅＶｐｐ散射中喷注的产生和从＝１４ＧｅＶ到９１ＧｅＶｅ＋ｅ－对撞等实验的基本特征，并外推到≤２２ＴｅＶ的超高能区．
A parton model based on perturbative QCD is developed for the description of ultrahigh energy interaction between cosmic rays and air nuclei.A LLA QCD calculation of jet production cross sections in proton-proton scattering and a hadronization scheme based on independent fragmentation model are presented.A number of parameters in the hadronization scheme are so selected that the basic features of hadronic production in e+e-collision covering C.M.energy region from 14 GeV to 91 GeV can be reproduced. A Monte Carlo generator is constructed to reproduce the basic characteristics of proton-antiproton scattering in the C.M.energy region from 60 GeV to 1800 GeV and to extrapolate smoothly to ultrahigh energy region extending to 22 TeV.
出处
《高能物理与核物理》
CSCD
北大核心
1994年第11期961-969,共9页
High Energy Physics and Nuclear Physics
关键词
超高能相互作用
QCD
部分子模型
强子化
宇宙线
ultrahigh energy interaction,QCD parton model, hadronization,e￣+e￣- collision,pp scattering,jet.
