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Search for R-parity violating decays of a top squark in proton-proton collisions at root s=8TeV
CMS Collaboration
2016
发表期刊PHYSICS LETTERS B
卷号760页码:178
文章类型Article
摘要The results of a search for a supersymmetric partner of the top quark (top squark), pair-produced in proton-proton collisions at root s = 8 TeV, are presented. The search, which focuses on R-parity violating, chargino-mediated decays of the top squark, is performed in final states with low missing transverse momentum, two oppositely charged electrons or muons, and at least five jets. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb(-1)collected with the CMS detector at the LHC in 2012. The data are found to be in agreement with the standard model expectation, and upper limits are placed on the top squark pair production cross section at 95% confidence level. Assuming a 100% branching fraction for the top squark decay chain, (t) over tilde -> t (chi) over tilde (+/-)(1), (chi) over tilde (+/-)(1) -> l(+/-) + jj, top squark masses less than 890(1000) GeV for the electron (muon) channel are excluded for the first time in models with a single nonzero R-parity violating coupling. lambda'(ijk) (i, j, k <= 2), where i, j, k correspond to the three generations. (C) 2016 The Author(s). Published by Elsevier B.V.
关键词CMS Physics Supersymmetry Leptons Low missing transverse energy
DOI10.1016/j.physletb.2016.06.039
关键词[WOS]PP COLLISIONS ; TEV ; SUPERSYMMETRY
语种英语
WOS记录号WOS:000382890500029
引用统计
被引频次:4[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/311005/260740
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 R-parity violating decays of a top squark in proton-proton collisions at root s=8TeV[J]. PHYSICS LETTERS B,2016,760:178.
APA CMS Collaboration.(2016).Search for R-parity violating decays of a top squark in proton-proton collisions at root s=8TeV.PHYSICS LETTERS B,760,178.
MLA CMS Collaboration."Search for R-parity violating decays of a top squark in proton-proton collisions at root s=8TeV".PHYSICS LETTERS B 760(2016):178.
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