Pileup subtraction using jet areas
Pileup subtraction using jet areas
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DOI：
10.1016/j.physletb.2007.09.077
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发表时间：
2008-01-17
影响因子：
4.4
通讯作者：
Salam, Gavin P.
中科院分区：
文献类型：
--
作者：
Cacciari, Matteo;Salam, Gavin P.
大型强子对撞机面临的主要挑战之一是，在存在大量额外的软pp碰撞（堆积）的情况下，从强子最终态中提取精确的信息，这些碰撞与高亮度运行中的任何硬相互作用同时发生。我们提出了一种基于射流区域的新技术，该技术可以对堆积和潜在事件效应进行逐喷校正。它是数据驱动的，不依赖于蒙特卡罗建模，可以与任何射流算法一起使用，射流区域可以合理地定义。我们说明了它在一些关键过程中的有效性，并发现它也可以应用于Tevatron，低光度LHC和LHC重离子碰撞的背景下。(c) 2007 Elsevier B.V.版权所有
One of the major challenges for the LHC will be to extract precise information from hadronic final states in the presence of the large number of additional soft pp collisions, pileup, that occur simultaneously with any hard interaction in high luminosity runs. We propose a novel technique, based on jet areas, that provides jet-by-jet corrections for pileup and underlying-event effects. It is data driven, does not depend on Monte Carlo modelling and can be used with anyjet algorithm for which a jet area can be sensibly defined. We illustrate its effectiveness for some key processes and find that it can be applied also in the context of the Tevatron, low-luminosity LHC and LHC heavy-ion collisions. (c) 2007 Elsevier B.V. All rights reserved.