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arXiv 2107.01212hep-phhep-th
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超领先对数的恢复

Resummation of Super-Leading Logarithms

Thomas Becher, Matthias Neubert, Ding Yu Shao

摘要:

高能对撞机上的喷流截面表现出复杂的几何增强的高阶修正模式。特别是,所谓的非全局性粒子群是由喷流内部高能部分子发出的软辐射产生的。虽然这是一个单对数效应在轻子对撞机,在强子对撞机的相位因子的振幅导致双对数校正开始在四圈的顺序。这种效应在很久以前就被发现了,但对这些项的高阶行为及其过程依赖性知之甚少。本文首次导出了强子对撞机上一般$2\to l$散射过程中这些“超前导谱”的全序结构,并将它们归为封闭形式。

英文摘要:

Jet cross sections at high-energy colliders exhibit intricate patterns of logarithmically enhanced higher-order corrections. In particular, so-called non-global logarithms emerge from soft radiation emitted off energetic partons inside jets. While this is a single-logarithmic effect at lepton colliders, at hadron colliders phase factors in the amplitudes lead to double-logarithmic corrections starting at four-loop order. This effect was discovered a long time ago, but not much is known about the higher-order behavior of these terms and their process dependence. We derive, for the first time, the all-order structure of these "super-leading logarithms" for generic $2\to l$ scattering processes at hadron colliders and resum them in closed form.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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