Searches for long-lived charged particles in pp collisions at sqrt(s) = 7 and 8 TeV
Searches for long-lived charged particles in pp collisions at sqrt(s) = 7 and 8 TeV
复制标题
在 sqrt(s) = 7 和 8 TeV 的 pp 碰撞中搜索长寿命带电粒子
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Cms Collaboration
中科院分区：
文献类型：
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作者：
Cms Collaboration
在pp碰撞中产生的重稳定带电粒子的搜索结果分别对应于5.0 fb − 1和18.8 fb − 1的积分光度。用CMS探测器收集的数据被用来研究候选信号的动量、能量沉积和到达时间。轻子的电荷在e /3和8 e之间，以及可以与探测器材料进行电荷交换的束缚态，进行了研究。分析结果的各种组合的内部跟踪器的签名，内部跟踪器和μ子探测器，μ子探测器。利用的探测器特征是到外部μ子系统的长时间光和在内部跟踪器中的高（或低）能量沉积。实验结果与预期的背景一致，并给出了长寿命胶子、标量顶夸克、标量τ轻子以及对产生的长寿命轻子的产生截面的上限。相应的质量下限，范围高达1322 GeV/ C 2的胶子，是最严格的日期。
Results of searches for heavy stable charged particles produced in pp collisions at √ s = 7 and 8 TeV are presented corresponding to an integrated luminosity of 5.0 fb − 1 and 18.8 fb − 1 , respectively. Data collected with the CMS detector are used to study the momentum, energy deposition, and time-of-flight of signal candidates. Leptons with an electric charge between e /3 and 8 e , as well as bound states that can undergo charge exchange with the detector material, are studied. Analysis results are presented for various combinations of signatures in the inner tracker only, inner tracker and muon detector, and muon detector only. Detector signatures utilized are long time-of-flight to the outer muon system and anomalously high (or low) energy deposition in the inner tracker. The data are consistent with the expected background, and upper limits are set on the production cross section of long-lived gluinos, scalar top quarks, and scalar τ leptons, as well as pair produced long-lived leptons. Corresponding lower mass limits, ranging up to 1322 GeV/ c 2 for gluinos, are the most stringent to date.
影响因子：
5.4
作者：
W. Beenakker;Silja Brensing;Michael Krämer;A. Kulesza;E. Laenen;I. Niessen
通讯作者：
W. Beenakker;Silja Brensing;Michael Krämer;A. Kulesza;E. Laenen;I. Niessen