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Search for a narrow, spin-2 resonance decaying to a pair of Z bosons in the q(q)over-barl(+)l(-) final state
CMS Collaboration
2013
发表期刊PHYSICS LETTERS B
卷号718期号:4--5页码:1208-1228
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要Results are presented from a search for a narrow, spin-2 resonance decaying into a pair of Z bosons, with one Z-boson decaying into leptons (e(+)e(-) or mu(+)mu(-)) and the other into jets. An example of such a resonance is the Kaluza-Klein graviton, G(KK), predicted in Randall-Sundrum models. The analysis is based on a 4.9 fb(-1) sample of proton-proton collisions at a center-of-mass energy of 7 TeV, collected with the CMS detector at the LHC. Kinematic and topological properties including decay angular distributions are used to discriminate between signal and background. No evidence for a resonance is observed, and upper limits on the production cross sections times branching fractions are set. In two models that predict Z-boson spin correlations in graviton decays, graviton masses are excluded lower than a value which varies between 610 and 945 GeV, depending on the model and the strength of the graviton couplings. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
关键词PARTON DISTRIBUTIONS PP COLLISIONS ROOT-S=7 TEV LHC
学科领域Physics
DOI10.1016/j.physletb.2012.11.063
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000314554300010
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被引频次:12[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/311005/213451
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 a narrow, spin-2 resonance decaying to a pair of Z bosons in the q(q)over-barl(+)l(-) final state[J]. PHYSICS LETTERS B,2013,718(4--5):1208-1228.
APA CMS Collaboration.(2013).Search for a narrow, spin-2 resonance decaying to a pair of Z bosons in the q(q)over-barl(+)l(-) final state.PHYSICS LETTERS B,718(4--5),1208-1228.
MLA CMS Collaboration."Search for a narrow, spin-2 resonance decaying to a pair of Z bosons in the q(q)over-barl(+)l(-) final state".PHYSICS LETTERS B 718.4--5(2013):1208-1228.
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