Search for supersymmetry with razor variables in pp collisions at root s=7 TeV

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	Search for supersymmetry with razor variables in pp collisions at root s=7 TeV
	CMS Collaboration
刊名	PHYSICAL REVIEW D
	2014
卷号	90 期号:11
关键词	MISSING TRANSVERSE-MOMENTUM DETECTOR ATLAS COLLABORATION PROTON-PROTON COLLISIONS HADRON COLLIDERS JETS GLUINOS EVENTS EXTENSION NEUTRINO PROGRAM
通讯作者	Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
英文摘要	The razor approach to search for R-parity conserving supersymmetric particles is described in detail. Two analyses are considered: an inclusive search for new heavy particle pairs decaying to final states with at least two jets and missing transverse energy, and a dedicated search for final states with at least one jet originating from a bottom quark. For both the inclusive study and the study requiring a bottom-quark jet, the data are examined in exclusive final states corresponding to all-hadronic, single-lepton, and dilepton events. The study is based on the data set of proton-proton collisions at root s = 7 TeV collected with the CMS detector at the LHC in 2011, corresponding to an integrated luminosity of 4.7 fb(-1). The study consists of a shape analysis performed in the plane of two kinematic variables, denoted M-R and R-2, that correspond to the mass and transverse energy flow, respectively, of pair-produced, heavy, new-physics particles. The data are found to be compatible with the background model, defined by studying event simulations and data control samples. Exclusion limits for squark and gluino production are derived in the context of the constrained minimal supersymmetric standard model (CMSSM) and also for simplified-model spectra (SMS). Within the CMSSM parameter space considered, squark and gluino masses up to 1350 GeV are excluded at 95% confidence level, depending on the model parameters. For SMS scenarios, the direct production of pairs of top or bottom squarks is excluded for masses as high as 400 GeV.
学科主题	Astronomy & Astrophysics; Physics
类目[WOS]	Astronomy & Astrophysics ; Physics, Particles & Fields
收录类别	SCI
语种	英语
WOS记录号	WOS:000346442200001
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213835]
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 supersymmetry with razor variables in pp collisions at root s=7 TeV[J]. PHYSICAL REVIEW D,2014,90(11).
APA	CMS Collaboration.(2014).Search for supersymmetry with razor variables in pp collisions at root s=7 TeV.PHYSICAL REVIEW D,90(11).
MLA	CMS Collaboration."Search for supersymmetry with razor variables in pp collisions at root s=7 TeV".PHYSICAL REVIEW D 90.11(2014).