Photo- and electroproduction of eta mesons
Photo- and electroproduction of eta mesons
复制标题
eta 介子的光和电产生
DOI：
--
复制
发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Lothar Tiator
中科院分区：
文献类型：
--
作者：
G. Knöchlein;Dieter Drechsel;Lothar Tiator
Eta的光和电生产的核子进行了研究，在一个有效的拉格朗日方法，包含玻恩条款和矢量介子和核子共振的贡献。特别是，我们审查和发展的形式主义与偏振自由度的符合实验。研究了单偏振和双偏振实验中出现的不同响应函数。我们将提出计算的结构功能和运动学条件是最敏感的拉格朗日的细节，特别是关于贡献的核子共振超出dominantS11（1535）共振。
Eta photo- and electroproduction off the nucleon is investigated in an effective lagrangian approach that contains Born terms and both vector meson and nucleon resonance contributions. In particular, we review and develop the formalism for coincidence experiments with polarization degrees of freedom. The different response functions appearing in single and double polarization experiments have been studied. We will present calculations for structure functions and kinematical conditions that are most sensitive to details of the lagrangian, in particular with regard to contributions of nucleon resonances beyond the dominantS11(1535) resonance.