Search for Leptoquarks Coupled to Third-Generation Quarks in Proton-Proton Collisions at s =13 TeV

doi:10.1103/PhysRevLett.121.241802

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 Leptoquarks Coupled to Third-Generation Quarks in Proton-Proton Collisions at s =13 TeV
	CMS Collaboration
刊名	PHYSICAL REVIEW LETTERS
	2018
卷号	121 期号:24 页码:241802
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.121.241802
文献子类	Article
英文摘要	Three of the most significant measured deviations from standard model predictions, the enhanced decay rate for B -> D-(())tau nu, hints of lepton universality violation in B -> K-(())ll decays, and the anomalous magnetic moment of the muon, can be explained by the existence of leptoquarks (LQs) with large couplings to third-generation quarks and masses at the TeV scale. The existence of these states can be probed at the LHC in high energy proton-proton collisions. A novel search is presented for pair production of LQs coupled to a top quark and a muon using data at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), recorded by the CMS experiment. No deviation from the standard model prediction has been observed and scalar LQs decaying exclusively into t mu are excluded up to masses of 1420 GeV. The results of this search are combined with those from previous searches for LQ decays into t tau and b nu, which excluded scalar LQs below masses of 900 and 1080 GeV. Vector LQs are excluded up to masses of 1190 GeV for all possible combinations of branching fractions to t mu, t tau and b nu. With this analysis, all relevant couplings of LQs with an electric charge of -1/3 to third-generation quarks are probed for the first time.
电子版国际标准刊号	1079-7114
WOS关键词	PAIR
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000452960100003
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286940]
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 Leptoquarks Coupled to Third-Generation Quarks in Proton-Proton Collisions at s =13 TeV[J]. PHYSICAL REVIEW LETTERS,2018,121(24):241802.
APA	CMS Collaboration.(2018).Search for Leptoquarks Coupled to Third-Generation Quarks in Proton-Proton Collisions at s =13 TeV.PHYSICAL REVIEW LETTERS,121(24),241802.
MLA	CMS Collaboration."Search for Leptoquarks Coupled to Third-Generation Quarks in Proton-Proton Collisions at s =13 TeV".PHYSICAL REVIEW LETTERS 121.24(2018):241802.