Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton-proton collisions at root s=13TeV

doi:10.1140/epjc/s10052-018-5661-z

	Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton-proton collisions at root s=13TeV
	ATLAS Collaboration
刊名	EUROPEAN PHYSICAL JOURNAL C
	2018
卷号	78 期号:3 页码:199
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-018-5661-z
文献子类	Article
英文摘要	A search for doubly charged Higgs bosons with pairs of prompt, isolated, highly energetic leptons with the same electric charge is presented. The search uses a proton-proton collision data sample at a centre-of-mass energy of 13 TeV corresponding to 36.1 fb(-1) of integrated luminosity recorded in 2015 and 2016 by the ATLAS detector at the LHC. This analysis focuses on the decays H-+/-+/- -> e(+/-)e(+/-), H-+/-+/- -> e(+/-)mu(+/-) and H-+/-+/- -> mu(+/-)mu(+/-), fitting the dilepton mass spectra in several exclusive signal regions. No significant evidence of a signal is observed and corresponding limits on the production cross-section and consequently a lower limit on m(H-+/-+/-) are derived at 95% confidence level. With l(+/-)l(+/-) = e(+/-)e(+/-)/mu(+/-)mu(+/-)/e(+/-)mu(+/-), the observed lower limit on the mass of a doubly charged Higgs boson only coupling to left-handed leptons varies from 770 to 870GeV (850GeV expected) for B(H-+/-+/- -> l(+/-)l(+/-)) = 100% and both the expected and observed mass limits are above 450GeV for B(H-+/-+/- -> l(+/-)l(+/-)) = 10% and any combination of partial branching ratios.
电子版国际标准刊号	1434-6052
WOS关键词	MAJORANA NEUTRINO MASSES ; CROSS-SECTION ; LHC ; MODELS ; VIOLATION ; SYMMETRY
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000427620000001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285776]
专题	高能物理研究所_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 doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton-proton collisions at root s=13TeV[J]. EUROPEAN PHYSICAL JOURNAL C,2018,78(3):199.
APA	ATLAS Collaboration.(2018).Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton-proton collisions at root s=13TeV.EUROPEAN PHYSICAL JOURNAL C,78(3),199.
MLA	ATLAS Collaboration."Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton-proton collisions at root s=13TeV".EUROPEAN PHYSICAL JOURNAL C 78.3(2018):199.