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arXiv 1004.3483hep-ph
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high-pT喷流形状的非全局优化和喷流算法

Non-global logarithms and jet algorithms in high-pT jet shapes

Andrea Banfi, Mrinal Dasgupta, Kamel Khelifa-Kerfa, Simone Marzani

摘要:

我们考虑最近提出的类型的喷气形状可观的,其中的形状的一个或多个高pT喷气,在一个多喷事件中产生的明确的喷气多重性,可以测量离开其他喷气事件中未测量。我们指出的结构,充分次领先的对数recremation特别包括recremation的非全球性的recremations在领先的NC限制,并强调其性质。我们还指出了喷算法之间的差异,在软胶子remation的背景下,这样的观测。

英文摘要:

We consider jet-shape observables of the type proposed recently, where the shapes of one or more high-pT jets, produced in a multi-jet event with definite jet multiplicity, may be measured leaving other jets in the event unmeasured. We point out the structure of the full next-to-leading logarithmic resummation specifically including resummation of non-global logarithms in the leading-Nc limit and emphasising their properties. We also point out differences between jet algorithms in the context of soft gluon resummation for such observables.

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