加载中…
We reinvestigate photoproduction off the nucleon target, based on an effective Lagrangian approach. We include higher nucleon resonances such as , , , and , of which the data are taken from the 2012 edition of Review of Paritcle Physics, in addition to the -channel diagrams (, , and ), the -channel nucleon, and -channel hyperon(, , and ) contributions. We find that the and resonances are essential in describing the new CLAS data for charged photoproduction. On the other hand, they rarely affect for neutral photoproduction.

生成讲解博客的中文版本

生成AI智能校验的中文版本