摘要
第一代夸克－轻子是组成所有粒子的基元，第二、第三代由二正一反基元组成，夸克和轻子不混合时正好只能形成对称的３代正反基元组成联系于弱电相互作用量子───光子，Ｗ￣±，Ｚ￣０和强相互作用的基态介子。这种结构是最简洁的和对称的，也是和某些已知模型一致的。夸克－轻子如果混合还可以组成其它粒子。根据ｓ－ｃ夸克的对称性，由ｕ，ｄ，ｃ组成的重味强子可以分为ＳＵ（３）的８重态、１０重态，并导出相应的简单的质量公式，由此可以预言若干强子的质量，如或３６７３ＭｅＶ．同时，推广Ｒｏｓｓ模型能得到τ的结构模型，其质量公式和已知的α＿ｓ值及１９９２年ＢＥＰＣ测得的最新质量完全一致。
We consider that all of particles may be composed of the first generationquark-leptons,which are the basic units.The two units and one antiunit form the secondand third generations,which just has only three families when quarks and leptons are notmixed each other.Various unit-antiunit pairs are connected with the electroweakphoton,W￣±,Z￣0 and the strong ground mesons.This structure is the simplest and sym-metrical,is also the same with some known models.We conjecture that the mixtures ofquark-leptons may form other particles.Based on the symmetry of s-c quarks, theheavy flavor hadrons which made of u,d and c quarks may be classified by SU(3)octecand decuplet,and some simple mass formulas are obtaine, then we predict masses ofsome hadrons,e.g.m( )= 3 175 or 3 673 MeV. Moreover,the Ross model is extendedto construct a composite model of τ, in which the mass formula is consistent withknown、α_s and new τ mass value detected by BEPC in 1992.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
1994年第2期100-105,共6页
Journal of Yunnan University(Natural Sciences Edition)
基金
云南省教委科学基金
关键词
复合模型
代
粒子
重味强子
结构
quark-lepton,composite model,generation,c quark ,massformula,τ
