标题： charm量子吸收由核子 显示英文标题

标题： Charmonium absorption by nucleons

摘要： 在与核子的碰撞中研究了$J/\Psi$的解离，并通过玻色子交换模型计算了从$\Lambda_c{\bar D}$生产阈值到高能区的解离截面的能量依赖性。 我们展示了我们的结果与基于短程QCD和Regge理论的计算之间的符合程度。 讨论了我们的计算与关于$J/\Psi$光电产生的数据之间的一致性。 我们利用前向色散关系评估了弹性的$J/\Psi{+}N$截面，并证明了它与QCD求和规则的预测总体上是一致的。 我们的结果与从 $J/\Psi$ 在 $\gamma{+}A$，$p{+}A$和 $A{+}A$碰撞中产生的实验数据得出的表观解离截面一致。 显示英文摘要

摘要： $J/\Psi$ dissociation in collisions with nucleons is studied within a boson exchange model and the energy dependence of the dissociation cross section is calculated from the threshold for $\Lambda_c{\bar D}$ production to high energies. We illustrate the agreement of our results with calculations based on short distance QCD and Regge theory. The compatibility between our calculations and the data on $J/\Psi$ photoproduction on a nucleon is discussed. We evaluate the elastic $J/\Psi{+}N$ cross section using a forward dispersion relation and demonstrate the overall agreement with the predictions from QCD sum rules. Our results are compatible with the phenomenological dissociation cross section evaluated from the experimental data on $J/\Psi$ production from $\gamma{+}A$, $p{+}A$ and $A{+}A$ collisions.