关于J/ψ→G_b+γ和J/ψ→e+ē过程  

On the mechanism of both the radiative production of glueball and the annihilation into electron-positron pair in J/ψ decays

作　　者：彭宏安[1] 段春贵[2] 阎占元[3] 

机构地区：[1]北京大学物理学院,北京100871 [2]河北师范大学物理系 [3]华北电力大学应用物理系,保定071003

出　　处：《物理学报》2004年第8期2478-2485,共8页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :10 175 0 74);河北省自然科学基金 (批准号 :10 3 14 3 );华北电力大学青年科研基金资助的课题~~

摘　　要：基于J ψ辐射产生胶球态Gb 和湮没为ee— 对两过程的中间态和末态都不涉及任何夸克强子而只与强作用的真空性质密切相关这一特性 ,从另一种角度讨论了这两个过程 .利用高能强作用软过程中修改后的pomeron场论模型和相关的最大非微扰强作用反应假定 ,并考虑到轻的和重的组分夸克在结构上的差异而在模型参数中作出相应的变更后 ,提出了这两个过程的另一种物理机制 ,计算了它们的衰变宽度 ,定出了胶球态与非微扰胶子间的耦合数值 。Based on the character in which both the intermediate and final states are intimately related with the vacuum properties of strong_interactions,we have discussed from an alternative point of view the processes of both the radiative production of glueball and the annihilation into electron_positron pair in J/ψ decays.Using the modified field theory model of pomeron in high_energy soft strong processes and the consequent hypothesis of the maximum non_perturbative strong interaction as well as the relevant changes of parameters of the model connecting with the large inner_structure difference between light and heavy constituent quarks,we proposed another mechanism for these two decay processes and calculated their partial width.The coupling constant between the glueballs and the non_perturbative gluons has been estimated.

关 键 词：高能物理学 粒子物理学 非微扰 J/Ψ衰变 正负电子湮没 pomeron场论 

分 类 号：O572.3[理学—粒子物理与原子核物理]