Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at root s=13 TeV

doi:10.1007/JHEP07(2017)121

CORC > 高能物理研究所 > 中国科学院高能物理研究所 > 粒子天体物理中心

	Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at root s=13 TeV
	CMS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2017
期号	7 页码:121
关键词	Beyond Standard Model Hadron-Hadron scattering (experiments)
ISSN号	1029-8479
DOI	10.1007/JHEP07(2017)121
文献子类	Article
英文摘要	A search is performed for third-generation scalar leptoquarks and heavy right-handed neutrinos in events containing one electron or muon, one hadronically decaying tau lepton, and at least two jets, using a root s = 13 TeV pp collision data sample corresponding to an integrated luminosity of 12: 9 fb(-1) collected with the CMS detector at the LHC in 2016. The number of observed events is found to be in agreement with the standard model prediction. A limit is set at 95% confidence level on the product of the leptoquark pair production cross section and beta(2), where beta is the branching fraction of leptoquark decay to a tau lepton and a bottom quark. Assuming beta = 1, third-generation leptoquarks with masses below 850 GeV are excluded at 95% confidence level. An additional search based on the same event topology involves heavy right-handed neutrinos, N-R, and right-handed W bosons, W-R, arising in a left-right symmetric extension of the standard model. In this search, W-R bosons are assumed to decay to a tau lepton and N-R followed by the decay of the N-R to a tau lepton and an off-shell W-R boson. Assuming the mass of the right-handed neutrino to be half of the mass of the right-handed W boson, W-R boson masses below 2.9 TeV are excluded at 95% confidence level. These results improve on the limits from previous searches for third-generation leptoquarks and heavy right-handed neutrinos with tau leptons in the final state.
WOS关键词	COLLIDERS
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000406883700001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284500]
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 third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at root s=13 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2017(7):121.
APA	CMS Collaboration.(2017).Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at root s=13 TeV.JOURNAL OF HIGH ENERGY PHYSICS(7),121.
MLA	CMS Collaboration."Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at root s=13 TeV".JOURNAL OF HIGH ENERGY PHYSICS .7(2017):121.