S波粲偶素的分布振幅的计算  

Calculations of Distribution Amplitudes for S-wave Charmonium States

作　　者：王诗佳 苗子青 周锐 WANG Shi-jia;MIAO Zi-qing;ZHOU Rui(College of Sciences,North China University of Science and Technology,Tangshan Hebei 063210,China)

机构地区：[1]华北理工大学理学院,河北唐山063210

出　　处：《华北理工大学学报（自然科学版）》2018年第2期111-116,共6页Journal of North China University of Science and Technology：Natural Science Edition

基　　金：华北理工大学大学生创新创业训练计划项目(X2017288)

摘　　要：基于库伦势的薛定谔波函数,构建了基态和激发态粲偶素的分布振幅的库伦势模型。在该模型下,分布振幅仅依赖于粲夸克的动量分数,更能客观地反映正反粲夸克强子化成粲素介子的过程。该模型构建的介子波函数可以作为一个非微扰输入,来研究末态含粲偶数的各类两体、三体和半轻B介子衰变过程。Based on the Schr dinger wave functions for the Coulomb potential,a model on the distribution amplitudes for ground and radially excited charmonium states was built.Under this model,the distribution amplitudes only depend on the momentum fractions,and the process of hadronization of the quark and antiquark was precisely reflected.With these non-perturbed input,various two-body,three-body and semi-leptonic decays of the heavy mesons to the final states including charmonium states can be studied.

关 键 词：粲偶素 分布振幅 激发态 弱衰变 微扰计算 

分 类 号：O572.25[理学—粒子物理与原子核物理]