Title: $ρJ/Ψ$ Scattering in an Improved Many Body Potential Show Chinese title

Title: $ρJ/Ψ$ 在改进的多体势中的散射

Abstract: We calculate the cross-sections for the processes $\rho J/\psi\rightarrow D^0\bar{D}^0$, $\rho J/\psi\rightarrow D^0\bar{D}^{0*}$ ($D^{0*}\bar{D}^{0}$) and $\rho J/\psi\rightarrow D^{0*}\bar{D}^{0*}$ using a QCD-motivated many-body overlap factor to modify the usual sum of two-body interaction model. The realistic Cornell potential has been used for pairwise interaction in the four quark Hamiltonian and noted to give lesser cross-sections as compared to the quadratic potential. The Resonating group method is employed along with the Born approximation which decouples its integral equations. It is pointed out that the additional QCD effect (a gluonic field ovelap factor) result in a significant suppression in the cross sections as compared to the more popular sum of two-body interaction. Show Chinese abstract

Abstract: 我们使用一种基于QCD的多体重叠因子来修改通常的两体相互作用模型，计算过程$\rho J/\psi\rightarrow D^0\bar{D}^0$、$\rho J/\psi\rightarrow D^0\bar{D}^{0*}$ ($D^{0*}\bar{D}^{0}$) 和$\rho J/\psi\rightarrow D^{0*}\bar{D}^{0*}$的截面。 现实的Cornell势已被用于四夸克哈密顿量中的两两相互作用，并注意到与二次势相比，它给出的截面更小。 采用共振组方法并结合Born近似，从而解耦其积分方程。 指出额外的QCD效应（胶子场重叠因子）相对于更流行的两体相互作用之和，导致截面显著减小。