arXiv 1003.01962010-03-01hep-ph

增强Pomeron方案中的全截面和衍射截面

Total and diffractive cross sections in enhanced Pomeron scheme

Sergey Ostapchenko

发表信息：: Phys.Rev.D81:114028,2010
DOI：: 10.1103/PhysRevD.81.114028

摘要：

首次在Reggeon场论框架内，基于增强Pomeron图对三重Pomeron耦合的所有阶次的重要贡献，系统地分析了质子-质子截面的高能行为.不同类别的增强图的重要性进行了研究，它表明，吸收校正由于“网”状增强图和由于Pomeron“回路”都是显着的，这些类都不能被忽略在高能量。与其他方法的基础上，增强图的部分图解进行比较。特别是，重要的差异被发现关于预测的高能量行为的总的和单个高质量衍射质子-质子截面，与我们的值$σ_{pp}^{\rm tot}$在$\sqrt{s}=14$ TeV是一些$25\div40$ %高，并与能量上升的$σ_{\rm HM}^{\rm SD}$饱和远低于大型强子对撞机的能量。并对产生这些差异的主要原因进行了分析和解释。

英文摘要：

For the first time, a systematic analysis of the high energy behavior of total and diffractive proton-proton cross sections is performed within the Reggeon Field Theory framework, based on the resummation of all significant contributions of enhanced Pomeron diagrams to all orders with respect to the triple-Pomeron coupling. The importance of different classes of enhanced graphs is investigated and it is demonstrated that absorptive corrections due to "net"-like enhanced diagrams and due to Pomeron "loops" are both significant and none of those classes can be neglected at high energies. A comparison with other approaches based on partial resummations of enhanced diagrams is performed. In particular, important differences are found concerning the predicted high energy behavior of total and single high mass diffraction proton-proton cross sections, with our values of $σ_{pp}^{\rm tot}$ at $\sqrt{s}=14$ TeV being some $25\div40$% higher and with the energy rise of $σ_{\rm HM}^{\rm SD}$ saturating well below the LHC energy. The main causes for those differences are analyzed and explained.

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