Search for supersymmetry in events with four or more leptons in root s=8 TeV pp collisions with the ATLAS detector

	Search for supersymmetry in events with four or more leptons in root s=8 TeV pp collisions with the ATLAS detector
	ATLAS collaboration
刊名	PHYSICAL REVIEW D
	2014
卷号	90 期号:5
关键词	PARITY VIOLATING DECAYS MISSING TRANSVERSE-MOMENTUM E(+)E(-) COLLISIONS HADRON COLLIDERS SUPERGAUGE TRANSFORMATIONS PAIR PRODUCTION PARTICLES ENERGY MODEL BREAKING
通讯作者	Aad, G (reprint author), Aix Marseille Univ, CPPM, Marseille, France.
英文摘要	Results from a search for supersymmetry in events with four or more leptons including electrons, muons and taus are presented. The analysis uses a data sample corresponding to 20.3 fb(-1) of proton proton collisions delivered by the Large Hadron Collider at root s = 8 TeV and recorded by the ATLAS detector. Signal regions are designed to target supersymmetric scenarios that can be either enriched in or depleted of events involving the production of a Z boson. No significant deviations are observed in data from standard model predictions and results are used to set upper limits on the event yields from processes beyond the standard model. Exclusion limits at the 95% confidence level on the masses of relevant supersymmetric particles are obtained. In R-parity-violating simplified models with decays of the lightest supersymmetric particle to electrons and muons, limits of 1350 and 750 GeV are placed on gluino and chargino masses, respectively. In R-parity-conserving simplified models with heavy neutralinos decaying to a massless lightest supersymmetric particle, heavy neutralino masses up to 620 GeV are excluded. Limits are also placed on other supersymmetric scenarios.
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:000341264900001
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213766]
专题	高能物理研究所_实验物理中心
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	ATLAS collaboration. Search for supersymmetry in events with four or more leptons in root s=8 TeV pp collisions with the ATLAS detector[J]. PHYSICAL REVIEW D,2014,90(5).
APA	ATLAS collaboration.(2014).Search for supersymmetry in events with four or more leptons in root s=8 TeV pp collisions with the ATLAS detector.PHYSICAL REVIEW D,90(5).
MLA	ATLAS collaboration."Search for supersymmetry in events with four or more leptons in root s=8 TeV pp collisions with the ATLAS detector".PHYSICAL REVIEW D 90.5(2014).