QQ客服 官方微博 反馈留言

	Search for anomalous wtb couplings and flavour-changing neutral currents in t-channel single top quark production in pp collisions at root s=7 and 8 tev
	Khachatryan, V.1; Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Eroe, J.2
刊名	Journal of high energy physics
	2017-02-07
期号	2页码:45
关键词	Flavour changing neutral currents Hadron-hadron scattering (experiments) Top physics
ISSN号	1029-8479
DOI	10.1007/jhep02(2017)028
通讯作者	Khachatryan, v.()
英文摘要	Single top quark events produced in the t channel are used to set limits on anomalous wtb couplings and to search for top quark flavour-changing neutral current (fcnc) interactions. the data taken with the cms detector at the lhc in proton-proton collisions at and 8 tev correspond to integrated luminosities of 5.0 and 19.7 fb(-1), respectively. the analysis is performed using events with one muon and two or three jets. a bayesian neural network technique is used to discriminate between the signal and backgrounds, which are observed to be consistent with the standard model prediction. the 95% confidence level (cl) exclusion limits on anomalous right-handed vector, and left- and right-handed tensor wtb couplings are measured to be vertical bar f (v) (r) vertical bar < 0.16,aeuro,vertical bar f (t) (l) vertical bar < 0.057, and - 0.049 < f (t) (r) < 0.048, respectively. for the fcnc couplings kappa (tug) and kappa (tcg), the 95% cl upper limits on coupling strengths are vertical bar kappa (tug)vertical bar/i > < 4.1 x 10(- 3) tev-1 and vertical bar kappa (tcg)vertical bar/lambda < 1.8 x 10(- 2) tev-1, where i > is the scale for new physics, and correspond to upper limits on the branching fractions of 2.0 x 10(-5) and 4.1 x 10(-4) for the decays t -> ug and t -> cg, respectively.
WOS关键词	P(P)OVER-BAR COLLISIONS ; STANDARD-MODEL ; HIGGS ; POLARIZATION ; TEVATRON ; EVENTS
WOS研究方向	Physics
WOS类目	Physics, Particles & Fields
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000394750000001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2176778
专题	高能物理研究所
通讯作者	Khachatryan, V.
作者单位	1.Yerevan Phys Inst, Yerevan 375036, Armenia 2.Inst Hochenergiephys, Vienna, Austria 3.Natl Ctr Particle & High Energy Phys, Minsk, Byelarus 4.Univ Antwerp, Antwerp, Belgium 5.Vrije Univ Brussel, Brussels, Belgium 6.Univ Libre Bruxelles, Brussels, Belgium 7.Univ Ghent, Ghent, Belgium 8.Catholic Univ Louvain, Louvain La Neuve, Belgium 9.Univ Mons, Mons, Belgium 10.Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
推荐引用方式 GB/T 7714	Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,et al. Search for anomalous wtb couplings and flavour-changing neutral currents in t-channel single top quark production in pp collisions at root s=7 and 8 tev[J]. Journal of high energy physics,2017(2):45.
APA	Khachatryan, V..,Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,...&Oropeza Barrera, C..(2017).Search for anomalous wtb couplings and flavour-changing neutral currents in t-channel single top quark production in pp collisions at root s=7 and 8 tev.Journal of high energy physics(2),45.
MLA	Khachatryan, V.,et al."Search for anomalous wtb couplings and flavour-changing neutral currents in t-channel single top quark production in pp collisions at root s=7 and 8 tev".Journal of high energy physics .2(2017):45.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。