摘要
计算了阈能附近氘核上η介子的光生反应γｄ→ηＸ．其中核子上η光生过程主要考虑Ｎ（１５３５）的贡献，氘－核子－核子顶角ｄｐｎ矩阵元处理成非相对论氘核波函数．所得截面和微分截面能够很好地符合最新的实验数据，并得出了γｎＮ＊耦合的大小．
The η meson photoproduction off deutron γ d-→ηX are calculated, where assuming the η photoproduction from nucleon is dominated by the N (1535), and the η-nucleon-nucleon vertex matrix element is approximated using the non-relativistic deuteron wave function. The cross section and differential cross section can fit the new data well, and the coupling constant of γnN* is obtained.
出处
《高能物理与核物理》
CSCD
北大核心
1998年第5期452-459,共8页
High Energy Physics and Nuclear Physics
