arXiv 1812.090402018-12-21hep-ph

一种新的高能软相互作用部分子模型

A new parton model for the soft interactions at high energies

E. Gotsman, E. Levin, I. Potashnikova

备注：: 12 pp. with 5 figures in eps files
DOI：: 10.1140/epjc/s10052-019-6699-2

摘要：

我们提出了一个新的部分子模型，并证明该模型描述了在高能量的相关实验数据。该模型基于1+1时空维的Pomeron演算，如参考文献[18]所建议的，并基于关于强子结构的简单假设，与散射振幅的碰撞参量相关。这个部分子模型是从QCD演化而来的，假设未知的非微扰修正导致相互作用偶极子的尺寸固定。这种方法的优点是它同时满足t-通道和s-通道么正性，并且可以用于求和所有的坡密子相互作用图，包括坡密子环。我们可以用这种方法来处理所有的反应：稀释-稀释（强子-强子），稀释-稠密（强子-核）和稠密-稠密（核-核）。不幸的是，在高能有效QCD理论（即CGC /饱和方法）中，我们仍然远远不能解决这个问题。

英文摘要：

We propose a new parton model and demonstrate that the model describes the relevant experimental data at high energies. The model is based on Pomeron calculus in 1+1 space-time dimensions, as suggested in Ref. [18] and on simple assumptions regarding the hadron structure, related to the impact parameter dependence of the scattering amplitude. This parton model evolves from QCD, assuming that the unknown non-perturbative corrections lead to fixing size of the interacting dipoles. The advantage of this approach is that it satisfies both t-channel and s-channel unitarity, and can be used for summing all diagrams of Pomeron interactions, including Pomeron loops. We can use this approach for all reactions: dilute-dilute (hadron-hadron), dilute-dense (hadron-nucleus) and dense-dense (nucleus-nucleus)for the scattering of parton systems. Unfortunately, we are still far from being able to tackle this problem in the effective QCD theory at high energy (i.e. in the CGC /saturation approach).

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