标题： 从QCD导出的强$ρNN$耦合 显示英文标题

标题： The strong $ρNN$ coupling derived from QCD

摘要： 我们研究了两个核子电流在真空和rho介子态之间的两点关联函数。 光锥QCD求和规则同时导出了$\rho NN$矢量和张量耦合。 通过相对于两个外部动量$p_1^2$和$p^2_2=(p-q)^2$的双重Borel变换，干净地减去了激发态和连续态的贡献。 我们的结果是$g_\rho =(2.5\pm 0.2)$，\$\kappa _\rho =(8.0\pm 2.0)，与核力中使用的值一致。 显示英文摘要

摘要： We study the two point correlation function of two nucleon currents sandwiched between the vacuum and the rho meson state. The light cone QCD sum rules are derived both for $\rho NN$ vector and tensor couplings simultaneously. The contribution from the excited states and the continuum is subtracted cleanly through the double Borel transform with respect to the two external momenta, $p_1^2$, $p^2_2=(p-q)^2$. Our results are $g_\rho =(2.5\pm 0.2)$, $\kappa_\rho =(8.0\pm 2.0), in good agreement with the values used in the nuclear forces.