论文标题
$ n（1520）$和$ n（1535）$结构的研究通过$γ^*p \ to n^*$转换
Study of $N(1520)$ and $N(1535)$ structures via $γ^*p\to N^*$ transitions
论文作者
论文摘要
$ n（1520）$和$ n（1535）$的螺旋幅度在$γ^*p \ to n^*$ to n^*$电磁过渡中的共振是在组成夸克模型中使用脉冲模型中的，其中质子和共振是在三分夸克配置中。对螺旋性的理论结果和实验数据的比较，$ a_ {1/2} $，$ a_ {3/2} $，以及$ s_ {1/2} $的比较，表明$ n（1520）$和$ n（1535）$ resonances $ resonances $ n = 1 $ l = 1 $ l = 1 $ l = 1 $ l = 1 $ l = 1 $ l = 1 $ l = 1 $ componon。但是，不可能在低$ q^2 $的情况下占主导地位。
The helicity amplitudes of the $N(1520)$ and $N(1535)$ resonances in the $γ^*p\to N^*$ electromagnetic transition are studied in the constituent quark model using the impulse approximation, with the proton and resonances assumed to be in three-quark configurations. The comparison of theoretical results and experimental data on the helicity amplitudes $A_{1/2}$, $A_{3/2}$, and $S_{1/2}$ indicates that the $N(1520)$ and $N(1535)$ resonances are primarily composed of three-quark $L=1$ states but may contain additional components. However, it is improbable that contributions from meson clouds will be dominant at low $Q^2$.
