Z^0能区正负电子湮没强子多重数分布及有关参数

Hadron Multiplicity Distributions and the Related Parameters in e￣+e￣- Annihilation at Z￣0 Energy Region

对９１．１－９１．３ＧｅＶ正负电子湮没带电强子多重数的负二项式分布的适用性及其有关参数、多重数前后关联、集团模型参数、半单举快度分布和反映喷注横动量特点的海鸥图的结果进行了报道．特别对有限快度区的上述有关参数的特点进行了分析，并与多重产生中的唯象模型的理论结果进行了比较．所述实验结果由ＬＥＰ上ＡＬＥＰＨ国际合作组的５万个Ｚ０事例得到．

The adaptability of charged hadron multiplicity distributions fitted with negative binomial and its related parameters,forward-backward multiplicity correlation,parameters of clan model,semi-inclusive rapidity distribution and the seagull plots describing the characteristics of transverse momenta of jets are discussed. In particular,the above mentioned parameters in restricted rapidity intervals are analysed and comparde with theoretical results of some phenomenological models of multiparticle production. Most of the results are obtained from 50000 Z0 events of ALEPH Collaboration at LEP.