论文标题
估计$υ$（1s）在EP流程接近阈值中的估计
Estimation of $Υ$(1S) production in ep process near threshold
论文作者
论文摘要
重Quarkonia的接近阈值照相产生是测试QCD启发的模型并限制大X区域核子的Gluon分布的重要方法。在研究各种模型时，我们选择了一个光子 - 聚光融合模型和一个接近阈值的J/$ψ$照片生产的Pomeron交换模型，强调了JLAB上Gluex最近实验测量的解释。我们发现，这两种模型不仅在$γ$和质子的广泛质量中心能量中有效，而且还可以推广以描述$υ$（1s）照相。使用这两种模型，我们预测EICC的$υ$（1s）的电生产横截面在16.75 GEV的质量中心能量中为48 fb至85 fb。
The near-threshold photo-productions of heavy quarkonia are important ways to test the QCD-inspired models and to constrain the gluon distribution of nucleon in the large x region. Investigating the various models, we choose a photon-gluon fusion model and a pomeron exchange model for J/$Ψ$ photo-production near threshold, emphasising on the explanation of the recent experimental measurement by GlueX at JLab. We find that these two models are not only valid in a wide range of the center-of-mass energy of $γ$ and proton, but also can be generalized to describe the $Υ$(1S) photo-production. Using these two models, we predict the electro-production cross-sections of $Υ$(1S) at EicC to be 48 fb to 85 fb at the center-of-mass energy of 16.75 GeV.
