已为您找到该学者11条结果 成果回收站
【期刊论文】Predictions for e+e− → J/c with Light-Cone Wave-Functions
司宗国, J.P. Ma, Z.G. Si,
,-0001,():
-1年11月30日
Predictions for e+e− → J/c from previous studies are made by taking charmonia as a nonrelativistic bound state and by using nonrelativistic QCD(NRQCD) approach. The predicted cross-section is smaller by an order of magnitude than the experimentally observed. We study the process by taking charm quark as a light quark and use light-cone wave-functions to parameterize nonperturbative effects related to charmonia. The total cross section of e+e− → J/c can be predicted, if these wavefunctions are known. Motivated by studies of light-cone wave-functions of light hadrons, we make a reasonable assumption of the forms of light-cone wave-functions. With these light-cone wave-functions we can obtain the cross section which is more closer to the experimentally observed than that from NRQCD approach. We also discuss in detail the difference between two approaches.
-
44浏览
-
0点赞
-
0收藏
-
0分享
-
144下载
-
0
-
引用