Search for excited leptons in pp collisions at root s=7 TeV
CMS Collaboration
刊名PHYSICS LETTERS B
2013
卷号720期号:4--5页码:309-329
关键词COMPOSITE MODELS QUARKS CONFIDENCE LEP
学科分类Physics
DOI10.1016/j.physletb.2013.02.031
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
英文摘要Results are presented of a search for compositeness in electrons and muons using a data sample of pp collisions at a center-of-mass energy root s = 7 TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 5.0 fb(-1). Excited leptons (l*) are assumed to be produced via contact interactions in conjunction with a standard model lepton and to decay via l* -> l gamma, yielding a final state with two energetic leptons and a photon. The number of events observed in data is consistent with that expected from the standard model. The 95% confidence upper limits for the cross section for the production and decay of excited electrons (muons), with masses ranging from 0.6 to 2 TeV, are 1.48 to 1.24 fb (1.31 to 1.11 fb). Excited leptons with masses below 1.9 TeV are excluded for the case where the contact interaction scale equals the excited lepton mass. The limits on the cross sections are the most stringent ones published to date. (c) 2013 CERN. Published by Elsevier B.V. All rights reserved.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
语种英语
WOS记录号WOS:000317151500003
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被引频次:8[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/311005/213502
专题中国科学院高能物理研究所_粒子天体物理中心_期刊论文
作者单位中国科学院高能物理研究所
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CMS Collaboration. Search for excited leptons in pp collisions at root s=7 TeV[J]. PHYSICS LETTERS B,2013,720(4--5):309-329.
APA CMS Collaboration.(2013).Search for excited leptons in pp collisions at root s=7 TeV.PHYSICS LETTERS B,720(4--5),309-329.
MLA CMS Collaboration."Search for excited leptons in pp collisions at root s=7 TeV".PHYSICS LETTERS B 720.4--5(2013):309-329.
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