Search for gluino mediated bottom- and top-squark production in multijet final states in pp collisions at 8 TeV

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	Search for gluino mediated bottom- and top-squark production in multijet final states in pp collisions at 8 TeV
	CMS Collaboration
刊名	PHYSICS LETTERS B
	2013
卷号	725 期号:4--5 页码:243-270
关键词	SUPERGAUGE TRANSFORMATIONS PARTON DISTRIBUTIONS ATLAS DETECTOR ROOT-S=7 TEV B-JETS MODEL PHENOMENOLOGY SUPERSYMMETRY EXTENSION INVARIANT
通讯作者	Alverson, G (reprint author), Northeastern Univ, Boston, MA 02115 USA.
英文摘要	A search for supersymmetry is presented based on events with large missing transverse energy, no isolated electron or muon, and at least three jets with one or more identified as a bottom-quark jet. A simultaneous examination is performed of the numbers of events in exclusive bins of the scalar sum of jet transverse momentum values, missing transverse energy, and bottom-quark jet multiplicity. The sample, corresponding to an integrated luminosity of 19.4 fb(-1), consists of proton-proton collision data recorded at a center-of-mass energy of 8 TeV with the CMS detector at the LHC in 2012. The observed numbers of events are found to be consistent with the standard model expectation, which is evaluated with control samples in data. The results are interpreted in the context of two simplified supersymmetric scenarios in which gluino pair production is followed by the decay of each gluino to an undetected lightest supersymmetric particle and either a bottom or top quark-antiquark pair, characteristic of gluino mediated bottom- or top-squark production. Using the production cross section calculated to next-to-leading-Order plus next-to-leading-logarithm accuracy, and in the limit of a massless lightest supersymmetric particle, we exclude gluinos with masses below 1170 GeV and 1020 GeV for the two scenarios, respectively. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000324223100009
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213597]
专题	高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	CMS Collaboration. Search for gluino mediated bottom- and top-squark production in multijet final states in pp collisions at 8 TeV[J]. PHYSICS LETTERS B,2013,725(4--5):243-270.
APA	CMS Collaboration.(2013).Search for gluino mediated bottom- and top-squark production in multijet final states in pp collisions at 8 TeV.PHYSICS LETTERS B,725(4--5),243-270.
MLA	CMS Collaboration."Search for gluino mediated bottom- and top-squark production in multijet final states in pp collisions at 8 TeV".PHYSICS LETTERS B 725.4--5(2013):243-270.