Search for pair production of heavy vector-like quarks decaying into high-(PT) W bosons and top quarks in the lepton-plus-jets final state in pp collisions at root s=13 TeV with the ATLAS detector

doi:10.1007/JHEP08(2018)048

	Search for pair production of heavy vector-like quarks decaying into high-(PT) W bosons and top quarks in the lepton-plus-jets final state in pp collisions at root s=13 TeV with the ATLAS detector
	ATLAS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2018
期号	8 页码:48
关键词	Exotics Hadron-Hadron scattering (experiments) vector-like quarks
ISSN号	1029-8479
DOI	10.1007/JHEP08(2018)048
文献子类	Article
英文摘要	A search is presented for the pair production of heavy vector-like B quarks, primarily targeting B quark decays into a W boson and a top quark. The search is based on 36.1 fb(-1) of pp collisions at root s = 13 TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Data are analysed in the lepton-plus-jets final state, characterised by a high-transverse-momentum isolated electron or muon, large missing transverse momentum, and multiple jets, of which at least one is b-tagged. No significant deviation from the Standard Model expectation is observed. The 95% confidence level lower limit on the B mass is 1350 GeV assuming a 100% branching ratio to Wt. In the SU(2) singlet scenario, the lower mass limit is 1170 GeV. The 100% branching ratio limits are found to be also applicable to heavy vector-like X production, with charge +5/3, that decay into Wt. This search is also sensitive to a heavy vector-like B quark decaying into other final states (Zb and Hb) and thus mass limits on B production are set as a function of the decay branching ratios.
WOS关键词	HADRON COLLIDERS ; MODEL ; LHC ; RESUMMATION ; PARTICLE ; MASS
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000441349900001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286207]
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 pair production of heavy vector-like quarks decaying into high-(PT) W bosons and top quarks in the lepton-plus-jets final state in pp collisions at root s=13 TeV with the ATLAS detector[J]. JOURNAL OF HIGH ENERGY PHYSICS,2018(8):48.
APA	ATLAS Collaboration.(2018).Search for pair production of heavy vector-like quarks decaying into high-(PT) W bosons and top quarks in the lepton-plus-jets final state in pp collisions at root s=13 TeV with the ATLAS detector.JOURNAL OF HIGH ENERGY PHYSICS(8),48.
MLA	ATLAS Collaboration."Search for pair production of heavy vector-like quarks decaying into high-(PT) W bosons and top quarks in the lepton-plus-jets final state in pp collisions at root s=13 TeV with the ATLAS detector".JOURNAL OF HIGH ENERGY PHYSICS .8(2018):48.