Pion production on exotic nuclei by antiproton annihilation
Pion production on exotic nuclei by antiproton annihilation
复制标题
通过反质子湮灭在奇异核上产生π介子
DOI：
10.1007/s10751-011-0554-7
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发表时间：
2012
影响因子：
--
通讯作者：
S. Wycech
中科院分区：
文献类型：
--
作者：
S. Lourenço;H. Lenske;S. Wycech
用扭曲波方法对反应过程进行了全量子力学描述，研究了反质子湮没在富含中子或质子核上产生的介子。从考虑耦合沟道效应的t-矩阵中得到了基本的弹性顶点{N}N和湮没顶点。理论振幅被用来导出微观光学模型势和介子产生顶点。微观上考虑了核结构的影响。给出了介子产生截面的计算结果。
Pion production by antiproton annihilation on neutron- or proton-rich nuclei is studied in a fully quantum mechanical description of the reaction process in terms of a distorted wave approach. The elementary elastic $\overline{N} N$ and the $\overline{N}N\to n\pi$ annihilation vertices are obtained from a t-matrix accounting for coupled channels effects. The theoretical amplitudes are used to derive a microscopic $\overline{N} A$ optical model potential and the meson production vertices. Nuclear structure effects are taken into account microscopically. Results for meson production cross sections are presented.