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Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV
CMS Collaboration
2013
发表期刊PHYSICS LETTERS B
卷号722期号:4--5页码:273-294
通讯作者Alverson, G (reprint author), Northeastern Univ, Boston, MA 02115 USA.
摘要Results are presented from a search for long-lived neutralinos decaying into a photon and an invisible particle, a signature associated with gauge-mediated supersymmetry breaking in supersymmetric models. The analysis is based on a 4.9 fb(-1) sample of proton-proton collisions at root s = 7 TeV, collected with the CMS detector at the LHC. The missing transverse energy and the time of arrival of the photon at the electromagnetic calorimeter are used to search for an excess of events over the expected background. No significant excess is observed, and lower limits at the 95% confidence level are obtained on the mass of the lightest neutralino, m > 220 GeV (for c tau < 500 mm), as well as on the proper decay length of the lightest neutralino, c tau > 6000 mm (for m < 150 GeV). (c) 2013 CERN. Published by Elsevier B.V. All rights reserved.
关键词MEDIATED SUPERSYMMETRY BREAKING DECAY
学科领域Physics
DOI10.1016/j.physletb.2013.04.027
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000319638000005
引用统计
被引频次:24[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213540
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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CMS Collaboration. Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV[J]. PHYSICS LETTERS B,2013,722(4--5):273-294.
APA CMS Collaboration.(2013).Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV.PHYSICS LETTERS B,722(4--5),273-294.
MLA CMS Collaboration."Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV".PHYSICS LETTERS B 722.4--5(2013):273-294.
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