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arXiv 1112.3752hep-ph
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再访Mueller-Navelet和前向喷气机的次领先阶喷气顶点

The next-to-leading order jet vertex for Mueller-Navelet and forward jets revisited

F. Caporale, D. Yu. Ivanov, B. Murdaca, A. Papa, A. Perri

摘要:

我们重新计算,完全在原来的BFKL方法和下一个领先的顺序,喷气顶点相关的生产Mueller Navelet射流质子碰撞和前向喷流DIS。我们认为这两个过程与传入夸克和胶子。出发点是在BFKL方法中夸克和胶子影响因子的定义。在这个过程中,我们明确表明,所有的红外发散取消重整化部分子密度时被认为是。我们比较了我们的结果与以前的计算的顶点参考。[1,2]并且,在夸克贡献的情况下,澄清文献中存在的差异。

英文摘要:

We recalculate, completely within the original BFKL approach and at the next-to-leading order, the jet vertex relevant for the production of Mueller-Navelet jets in proton collisions and of forward jets in DIS. We consider both processes with incoming quark and gluon. The starting point is the definition of quark and gluon impact factors in the BFKL approach. Following this procedure we show explicitly that all infrared divergences cancel when renormalized parton densities are considered. We compare our results for the vertex with the former calculation of Refs. [1,2] and, in the case of the quark contribution, clarify the discrepancy present in the literature.

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