Search for top-squark pair production in final states with one lepton, jets, and missing transverse momentum using 36 fb(-1) of root s=13 TeV pp collision data with the ATLAS detector

doi:10.1007/JHEP06(2018)108

	Search for top-squark pair production in final states with one lepton, jets, and missing transverse momentum using 36 fb(-1) of root s=13 TeV pp collision data with the ATLAS detector
	ATLAS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2018
期号	6 页码:108
关键词	Hadron-Hadron scattering (experiments)
ISSN号	1029-8479
DOI	10.1007/JHEP06(2018)108
文献子类	Article
英文摘要	The results of a search for the direct pair production of top squarks, the supersymmetric partner of the top quark, in final states with one isolated electron or muon, several energetic jets, and missing transverse momentum are reported. The analysis also targets spin-0 mediator models, where the mediator decays into a pair of dark-matter particles and is produced in association with a pair of top quarks. The search uses data from proton-proton collisions delivered by the Large Hadron Collider in 2015 and 2016 at a centre-of-mass energy of root s = 13TeV and recorded by the ATLAS detector, corresponding to an integrated luminosity of 36 fb(-1). A wide range of signal scenarios with different mass-splittings between the top squark, the lightest neutralino and possible intermediate supersymmetric particles are considered, including cases where the W bosons or the top quarks produced in the decay chain are off-shell. No significant excess over the Standard Model prediction is observed. The null results are used to set exclusion limits at 95% confidence level in several supersymmetry benchmark models. For pair-produced top-squarks decaying into top quarks, top-squark masses up to 940 GeV are excluded. Stringent exclusion limits are also derived for all other considered top-squark decay scenarios. For the spin-0 mediator models, upper limits are set on the visible cross-section.
WOS关键词	DYNAMICAL SYMMETRY-BREAKING ; DARK-MATTER PRODUCTION ; HADRON COLLIDERS ; SUPERGAUGE TRANSFORMATIONS ; SUPERSYMMETRIC EXTENSION ; STANDARD MODEL ; HIGGS-BOSON ; PLUS PLUS ; PARTICLE ; LHC
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000437348900002
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286090]
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 top-squark pair production in final states with one lepton, jets, and missing transverse momentum using 36 fb(-1) of root s=13 TeV pp collision data with the ATLAS detector[J]. JOURNAL OF HIGH ENERGY PHYSICS,2018(6):108.
APA	ATLAS Collaboration.(2018).Search for top-squark pair production in final states with one lepton, jets, and missing transverse momentum using 36 fb(-1) of root s=13 TeV pp collision data with the ATLAS detector.JOURNAL OF HIGH ENERGY PHYSICS(6),108.
MLA	ATLAS Collaboration."Search for top-squark pair production in final states with one lepton, jets, and missing transverse momentum using 36 fb(-1) of root s=13 TeV pp collision data with the ATLAS detector".JOURNAL OF HIGH ENERGY PHYSICS .6(2018):108.