Search for single production of vector-like quarks decaying into Wb in pp collisions at $$\sqrt{s} = 8$$ s = 8  TeV with the ATLAS detector

doi:10.1140/epjc/s10052-016-4281-8

IHEP OpenIR > 实验物理中心

	Search for single production of vector-like quarks decaying into Wb in pp collisions at $$\sqrt{s} = 8$$ s = 8 TeV with the ATLAS detector
	ATLAS Collaboration
	2016
发表期刊	EUROPEAN PHYSICAL JOURNAL C (IF:5.331[JCR-2016],4.759[5-Year])
ISSN	1434-6044
EISSN	1434-6052
卷号	76 期号:8 页码:442
文章类型	Article
摘要	A search for singly produced vector-like Q quarks, where Q can be either a T quark with charge +2/3 or a Y quark with charge -4/3, is performed in proton-proton collisions recorded with the ATLAS detector at the LHC. The dataset corresponds to an integrated luminosity of 20.3 fb(-1) and was produced with a centre-of-mass energy of root s = 8 TeV. This analysis targets Q -> Wb decays where the W boson decays leptonically. A veto on massive large-radius jets is used to reject the dominant t (t) over bar background. The reconstructed Q-candidate mass, ranging from 0.4 to 1.2 TeV, is used in the search to discriminate signal from background processes. No significant deviation from the Standard Model expectation is observed, and limits are set on the Q -> Wb cross-section times branching ratio. The results are also interpreted as limits on the QWb coupling and the mixing with the Standard Model sector for a singlet T quark or a Y quark from a doublet. T quarks with masses below 0.95 TeV are excluded at 95 % confidence level, assuming a unit coupling and a BR(T -> Wb) = 0.5, whereas the expected limit is 1.10 TeV.
DOI	10.1140/epjc/s10052-016-4281-8
收录类别	SCI ; ADS ; ADS
语种	英语
WOS记录号	WOS:000399603800001
ADS Bibcode	2016EPJC...76..442A
ADS URL	https://ui.adsabs.harvard.edu/abs/2016EPJC...76..442A
ADS引文	https://ui.adsabs.harvard.edu/abs/2016EPJC...76..442A/citations
INSPIRE ID	1422202
引用统计	被引频次：42[WOS] [WOS记录] [WOS相关记录] 被引频次：60 [INSPIRE] 被引频次：60 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/260943
专题	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 single production of vector-like quarks decaying into Wb in pp collisions at $$\sqrt{s} = 8$$ s = 8 TeV with the ATLAS detector[J]. EUROPEAN PHYSICAL JOURNAL C,2016,76(8):442.
APA	ATLAS Collaboration.(2016).Search for single production of vector-like quarks decaying into Wb in pp collisions at $$\sqrt{s} = 8$$ s = 8 TeV with the ATLAS detector.EUROPEAN PHYSICAL JOURNAL C,76(8),442.
MLA	ATLAS Collaboration."Search for single production of vector-like quarks decaying into Wb in pp collisions at $$\sqrt{s} = 8$$ s = 8 TeV with the ATLAS detector".EUROPEAN PHYSICAL JOURNAL C 76.8(2016):442.