arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1211.2811hep-phhep-ex
收藏

射流形状的堆积减法

Pileup subtraction for jet shapes

Gregory Soyez, Gavin P. Salam, Jihun Kim, Souvik Dutta, Matteo Cacciari

摘要:

喷流形状有可能在许多大型强子对撞机分析中发挥作用,例如在夸克-胶子鉴别或助推重物体强子衰变的喷流子结构分析中。然而,大多数形状都受到堆积的显著影响。我们介绍了一种通用的方法来纠正堆积效应的形状,它的行为事件由事件和射流由射流,并占强子质量。它涉及到一个数值确定,为每个射流,一个给定的形状的敏感性堆积。与用于确定堆积水平的现有技术一起,这使得能够外推到零堆积。该方法可用于广泛的射流形状,我们展示了其成功的应用背景下的夸克/胶子歧视和顶部标记。

英文摘要:

Jet shapes have the potential to play a role in many LHC analyses, for example in quark-gluon discrimination or jet substructure analyses for hadronic decays of boosted heavy objects. Most shapes, however, are significantly affected by pileup. We introduce a general method to correct for pileup effects in shapes, which acts event-by-event and jet-by-jet, and accounts also for hadron masses. It involves a numerical determination, for each jet, of a given shape's susceptibility to pileup. Together with existing techniques for determining the level of pileup, this then enables an extrapolation to zero pileup. The method can be used for a wide range of jet shapes and we show its successful application in the context of quark/gluon discrimination and top-tagging.

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。

↑