Trigger and reconstruction for heavy long-lived charged particles with the ATLAS detector
Trigger and reconstruction for heavy long-lived charged particles with the ATLAS detector
复制标题
使用 ATLAS 探测器触发和重建重的长寿命带电粒子
DOI：
10.1140/epjc/s10052-009-1040-0
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
A. Di Mattia
中科院分区：
文献类型：
--
作者：
S. Tarem;S. Bressler;H. Nomoto;A. Di Mattia
标准模型 (SM) 之外的许多物理模型都预测了长寿命带电粒子。这些模型的共同特征是重的、寿命长的带电粒子，其速度小于光速，β<1。这个独特的签名使其搜索与模型无关。本文介绍了我们作为 ATLAS 触发和重建链的一部分开发的方法，用于识别慢粒子并测量其质量。这些方法的有效性是通过两个模型来证明的，除了长寿命带电粒子的存在之外，这两个模型在各个方面都不同。 GMSB 模型，包括质量为 100 GeV 的轻子和在分裂 SUSY 模型中产生的质量为 300 GeV 的 R 强子。
Long lived charged particles are predicted by many models of physics beyond the standard model (SM). The common signature of such models is a heavy long-lived charged particle with velocity smaller than the speed of light,β<1. This unique signature makes the search for it model independent. This paper presents methods we developed as part of the ATLAS trigger and reconstruction chain for identifying slow particles and measuring their mass. The efficacy of these methods is demonstrated using two models that are different in every aspect except for the existence of long lived charged particles; a GMSB model that includes sleptons with a mass of 100 GeV, and R-Hadrons with a mass of 300 GeV produced in a split SUSY model.