Lepton flavor violating dilepton dijet signatures from sterile neutrinos at proton colliders

doi:10.1007/jhep10(2018)067

	Lepton flavor violating dilepton dijet signatures from sterile neutrinos at proton colliders
	Cazzato, Eros; Antusch, Stefan; Wang KC(王科臣); Wang, Kechen; Hammad, A.; Fischer, Oliver
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2018
期号	10 页码:67
关键词	Phenomenological Models
ISSN号	1029-8479
DOI	10.1007/jhep10(2018)067
文献子类	Article
英文摘要	In this article we investigate the prospects of searching for sterile neutrinos in lowscale seesaw scenarios via the lepton flavour violating (but lepton number conserving) dilepton dijet signature. In our study, we focus on the final state e(+/-+/-)jj at the HL-LHC and the FCC-hh (or the SppC). We perform a multivariate analysis at the detector level including the dominant SM backgrounds from di-top, di-boson, and tri-boson. Under the assumption of the active-sterile neutrino mixings vertical bar V-lN vertical bar(2) = vertical bar(e)vertical bar(2) = parallel to(2) and vertical bar V-N vertical bar(2) = parallel to(2) = 0, the sensitivities on the signal production cross section times branching ratio sigma(pp l(+/-)N) x BR(N l(+/-)jj) and on vertical bar V-lN vertical bar(2) for sterile neutrino mass M-N between 200 and 1000 GeV are derived. For the benchmark M-N = 500 GeV, when ignoring systematic uncertainties at the HL-LHC (FCC-hh/SppC) with 3 (20) ab(-1) luminosity, the resulting 2-sigma limits on vertical bar V-lN vertical bar(2) are 4.9 x 10(-3) (7.0 x 10(-5)), while the 2-sigma limit on sigma x BR are 4.4 x 10(-2) (1.6 x 10(-2)) fb, respectively. The effect of the systematic uncertainty is also studied and found to be important for sterile neutrinos with smaller masses. We also comment on searches with (+/-+/-)jj and (+/-)e(+/-)jj final states.
WOS关键词	MODELS ; LHC
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000448431700004
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286818]
专题	高能物理研究所_理论物理室
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	Cazzato, Eros,Antusch, Stefan,Wang KC,et al. Lepton flavor violating dilepton dijet signatures from sterile neutrinos at proton colliders[J]. JOURNAL OF HIGH ENERGY PHYSICS,2018(10):67.
APA	Cazzato, Eros,Antusch, Stefan,王科臣,Wang, Kechen,Hammad, A.,&Fischer, Oliver.(2018).Lepton flavor violating dilepton dijet signatures from sterile neutrinos at proton colliders.JOURNAL OF HIGH ENERGY PHYSICS(10),67.
MLA	Cazzato, Eros,et al."Lepton flavor violating dilepton dijet signatures from sterile neutrinos at proton colliders".JOURNAL OF HIGH ENERGY PHYSICS .10(2018):67.