标题： 在约100 MeV时$^{12}$C(p,2p) 反应中单粒子和集体模态的相互作用 显示英文标题

标题： Interplay of single-particle and collective modes in the $^{12}$C(p,2p) reaction near 100 MeV

摘要： 在$E_p =98.7$兆电子伏特质子束能量下分析了$^{12}$C(p,2p)$^{11}$B 反应，采用了严格的三粒子散射形式论，并扩展以包括核芯或剩余核的内部激发。 激发通过核芯与任意外部核子的相互作用进行。 我们假设 $^{11}$B 的基态和低激发态 [$\frac32^-$ (0.0 MeV), $\frac52^-$ (4.45 MeV), $\frac72^-$ (6.74 MeV)] 以及激发态 [$\frac12^-$ (2.12 MeV), $\frac32^-$ (5.02 MeV)] 分别属于 $K=\frac32^-$和 $K=\frac12^-$的转动带。 动力学核心激发导致反应截面显著增大，该反应会生成$\frac52^-$（4.45 MeV）的$^{11}$B 激发态，而该激发态无法通过单粒子激发机制来实现。理论计算与数据之间的详细一致性取决于所使用的光学模型参数化以及检测到的核子的动力学构型。 显示英文摘要

摘要： The $^{12}$C(p,2p)$^{11}$B reaction at $E_p =98.7$ MeV proton beam energy is analyzed using a rigorous three-particle scattering formalism extended to include the internal excitation of the nuclear core or residual nucleus. The excitation proceeds via the core interaction with any of the external nucleons. We assume the $^{11}$B ground and low-lying excited states [$\frac32^-$ (0.0 MeV), $\frac52^-$ (4.45 MeV), $\frac72^-$ (6.74 MeV)] and the excited states [$\frac12^-$ (2.12 MeV), $\frac32^-$ (5.02 MeV)] to be members of $K=\frac32^-$ and $K=\frac12^-$ rotational bands, respectively. The dynamical core excitation results in a significant cross section for the reaction leading to the $\frac52^-$ (4.45 MeV) excited state of $^{11}$B that cannot be populated through the single-particle excitation mechanism. The detailed agreement between the theoretical calculations and data depends on the used optical model parametrizations and the kinematical configuration of the detected nucleons.