Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at root s=13 TeV

doi:10.1007/JHEP08(2018)016

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	Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at root s=13 TeV
	CMS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2018
期号	8 页码:16
关键词	Beyond Standard Model Hadron-Hadron scattering (experiments)
ISSN号	1029-8479
DOI	10.1007/JHEP08(2018)016
文献子类	Article
英文摘要	A search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. A disappearing track is an isolated track with missing hits in the outer layers of the silicon tracker, little or no energy in associated calorimeter deposits, and no associated hits in the muon detectors. This search uses data collected with the CMS detector in 2015 and 2016 from proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC, corresponding to an integrated luminosity of 38.4 fb(-1). The results of the search are interpreted in the context of the anomaly-mediated supersymmetry breaking model. The data are consistent with the background-only hypothesis. Limits are set on the product of the cross section for direct production of charginos and their branching fraction to a neutralino and a pion, as a function of the chargino mass and lifetime. At 95% confidence level, charginos with masses below 715 (695) GeV are excluded for a lifetime of 3 (7) ns, as are charginos with lifetimes from 0.5 to 60 ns for a mass of 505 GeV. These are the most stringent limits using a disappearing track signature on this signal model for chargino lifetimes above approximate to 0.7 ns.
WOS关键词	SUPERSYMMETRY ; LEVEL
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000441224700003
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286200]
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 disappearing tracks as a signature of new long-lived particles in proton-proton collisions at root s=13 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2018(8):16.
APA	CMS Collaboration.(2018).Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at root s=13 TeV.JOURNAL OF HIGH ENERGY PHYSICS(8),16.
MLA	CMS Collaboration."Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at root s=13 TeV".JOURNAL OF HIGH ENERGY PHYSICS .8(2018):16.