部分子末态的色分离联接对e^+e^-反应中强子产额及其动量谱的影响  

Hadron Multiplicities and Its Momentum Spectra from Color Separate Connection among Final Partons in e^+e^- Annihilation Events

作　　者：邵凤兰[1] 谢去病[1] 

机构地区：[1]山东大学物理系,济南250100

出　　处：《高能物理与核物理》2001年第8期710-719,共10页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金资助&&

摘　　要：用JETSET事例产生器对e+ e- →q q +ng→hadrons反应中 ,末态部分子( q q +ng)以色分离的联接方式进行强子化时 ,各种强子产额及π + ,K± ,p/ p的动量谱进行了计算 ;与传统的色中性流联接方式强子化结果进行比较 .结果表明 :由T权重确定的色分离单态和色中性流这两种完全不同的色联接方式强子化得到的强子产额及π+ ,K± ,p/ p的动量谱 ,与实验符合的程度相同 ,有些更好 .We calculate the hadron multiplicities and the momentum spectra of π ±,K ±,p/ in e +e -→q+ng→hadrons for the case where the color separate singlet connections occur among the final partons q+ng with the help of JETSET event generator. We compare the results with those obtainted from the traditional color flow models and the available experimental data. The comparisons show that the momentum spectra obtained in the case of C-weight have a singnificant deviation from the data.,whereas those obtained in the case of T-weight are consistant with the data. The results from the case of T-weight are also consistant with those from the color flow model in most cases,and for proton, are even better than the later as implemented in default JETSET compared with the data.

关 键 词：部分子组态 色分离单态 强子化 色联接 强子产额 动量谱 e^+e^-反应 

分 类 号：O571[理学—粒子物理与原子核物理]