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arXiv 1001.4463hep-ph
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全阶修正和多喷射速率

All-Order Corrections and Multi-Jet Rates

Jeppe R. Andersen, Jennifer M. Smillie

摘要:

我们讨论的结果,从最近提出的硬,辐射修正某些多喷流过程在强子对撞机的所有顺序描述。该描述是基于获得散射振幅的t通道奇异性的全阶估计。作为一个简单的例子,我们说明了qQ和qg散射之间的相似之处。特别是,我们讨论了如何在树的水平,所有的非抑制螺旋振幅为这些过程包括一个纯的t-通道极点。这种结构用于构造全阶近似。

英文摘要:

We discuss results from a recently proposed all-order description of hard, radiative corrections to certain multi-jet processes at hadron colliders. The description is based on obtaining an all-order estimate of the t-channel singularities of scattering amplitudes. As a simple example, we illustrate the similarities between qQ and qg-scattering. In particular, we discuss how at tree-level, all non-suppressed helicity-amplitudes for these processes consist of a pure t-channel pole. This structure is used in the construction of all-order approximations.

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