Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at root s=7 TeV
文献类型：期刊论文
| 作者 | ATLAS collaboration |
| 刊名 | EUROPEAN PHYSICAL JOURNAL C
 |
| 出版日期 | 2012 |
| 卷号 | 72期号:4 |
| 关键词 | SUPERGAUGE TRANSFORMATIONS MASS-DEGENERATE MODEL GENERATORS CHARGINOS PIONS |
| 通讯作者 | Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany. |
| 英文摘要 | In models of anomaly-mediated supersymmetry breaking (AMSB), the lightest chargino is predicted to have a lifetime long enough to be detected in collider experiments. This letter explores AMSB scenarios in pp collisions at root s = 7 TeV by attempting to identify decaying charginos which result in tracks that appear to have few associated hits in the outer region of the tracking system. The search was based on data corresponding to an integrated luminosity of 1.02 fb(-1) collected with the ATLAS detector in 2011. The p(T) spectrum of candidate tracks is found to be consistent with the expectation from Standard Model background processes and constraints on the lifetime and the production cross section were obtained. In the minimal AMSB framework with m(3/2) < 32 TeV, m(0) < 1.5 TeV, tan beta = 5 and mu > 0, a chargino having mass below 92 GeV and a lifetime between 0.5 ns and 2 ns is excluded at 95 % confidence level. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000304013800004 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213234]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | ATLAS collaboration. Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at root s=7 TeV[J]. EUROPEAN PHYSICAL JOURNAL C,2012,72(4). |
| APA | ATLAS collaboration.(2012).Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at root s=7 TeV.EUROPEAN PHYSICAL JOURNAL C,72(4). |
| MLA | ATLAS collaboration."Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at root s=7 TeV".EUROPEAN PHYSICAL JOURNAL C 72.4(2012). |
入库方式： OAI收割
来源：高能物理研究所
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