A search for excited leptons in pp collisions at root s=7 TeV
CMS Collaboration
刊名PHYSICS LETTERS B
2011
卷号704期号:3页码:143-162
关键词E(+)E(-) COLLISIONS HADRON COLLIDERS EP COLLISIONS FERMIONS QUARK HERA
学科分类Physics
DOI10.1016/j.physletb.2011.09.021
通讯作者Tenchini, R (reprint author), Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy.
英文摘要A search for excited leptons is carried out with the CMS detector at the LHC, using 36 pb(-1) of pp collision data recorded at root s = 7 TeV. The search is performed for associated production of a lepton and an oppositely charged excited lepton pp -> ll*, followed by the decay l* -> l gamma, resulting in the eey final state, where l = e, mu. No excess of events above the standard model expectation is observed. Interpreting the findings in the context of l* production through four-fermion contact interactions and subsequent decay via electroweak processes, first upper limits are reported for l* production at this collision energy. The exclusion region in the compositeness scale A and excited lepton mass M-l* parameter space is extended beyond previously established limits. For Lambda = M-l*, excited lepton masses are excluded below 1070 GeV/c(2) for e* and 1090 GeV/c(2) for mu* at the 95% confidence level. (C) 2011 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:000296305800007
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被引频次:10[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/311005/213125
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. A search for excited leptons in pp collisions at root s=7 TeV[J]. PHYSICS LETTERS B,2011,704(3):143-162.
APA CMS Collaboration.(2011).A search for excited leptons in pp collisions at root s=7 TeV.PHYSICS LETTERS B,704(3),143-162.
MLA CMS Collaboration."A search for excited leptons in pp collisions at root s=7 TeV".PHYSICS LETTERS B 704.3(2011):143-162.
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