A new mechanism for the electromagnetic transition γ*N→N*(1535)

被引：0
|
作者：
安春生 [1 ,2 ]
邹冰松 [1 ,3 ]
机构：
[1] Institute of High Energy Physics,CAS
[2] Graduate University of Chinese Academy of Sciences
[3] Theoretical Physics Center for Science Facilities,CAS
来源：
中国物理C | 2010年 / 34卷 / 02期
基金：
中国国家自然科学基金;
关键词：
N*(1535); electromagnetic transition; helicity amplitudes;
D O I：
暂无
中图分类号：
O441 [电磁学];
学科分类号：
0809 ;
摘要：
The helicity amplitude Ap1/2 for the electromagnetic transition γ*N→N*(1535) is investigated.It is found that a new mechanism γ*→qq plays an important role in order to improve the description of this transition.On one hand,the A1p/2 is decreased to fall in the data range at the photon point Q2 = 0,while on the other hand,the new mechanism makes the function A1p/2(Q2) to decrease more slowly vs increasing Q2,as required by the data.
引用
收藏
页码：245 / 248
页数：4
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