标题： 相关$\bbox{πρ}$交换在$\bbox{NN}$相互作用中 显示英文标题

标题： Correlated $\bbox{πρ}$ Exchange in the $\bbox{NN}$ Interaction

摘要： 我们通过基于 $\pi$ 和 $\rho$ 介子之间相互作用的现实介子交换模型的色散理论方法，评估了由于相关 $\pi\rho$ 交换在 $\pi$、$\omega$ 和 $A_1$/$H_1$ 渠道中对核子-核子相互作用的贡献。 这些过程有显著的影响：在介子通道中，它抵消了由约1 GeV截断质量的单极型$\pi NN$形式因子产生的抑制；在$\omega$通道中，它提供了几乎一半的经验排斥力，为显式的夸克-胶子效应留下的空间很小。 显示英文摘要

摘要： We evaluate the contribution to the nucleon-nucleon interaction due to correlated $\pi\rho$ exchange in the $\pi$, $\omega$, and $A_1$/$H_1$ channels by means of dispersion-theoretic methods based on a realistic meson exchange model for the interaction between $\pi$ and $\rho$ mesons. These processes have substantial effects: In the pionic channel it counterbalances the suppression generated by a soft $\pi NN$ form factor of monopole type with a cutoff mass of about 1 GeV; in the $\omega$-channel it provides nearly half of the empirical repulsion, leaving little room for explicit quark-gluon effects.