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	Search for evidence of the type-iii seesaw mechanism in multilepton final states in proton-proton collisions at root s=13 tev
	Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Ambrogi, F.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Eroe, J.2
刊名	Physical review letters
	2017-12-01
卷号	119期号:22页码:17
ISSN号	0031-9007
DOI	10.1103/physrevlett.119.221802
通讯作者	Sirunyan, a. m.()
英文摘要	A search for a signal consistent with the type-iii seesaw mechanism in events with three or more electrons or muons is presented. the data sample consists of proton-proton collisions at root s = 13 tev collected by the cms experiment at the lhc in 2016 and corresponds to an integrated luminosity of 35.9 fb(-1). selection criteria based on the number of leptons and the invariant mass of oppositely charged lepton pairs are used to distinguish the signal from the standard model background. the observations are consistent with the expectations from standard model processes. the results are used to place limits on the production of heavy fermions of the type-iii seesaw model as a function of the branching ratio to each lepton flavor. in the scenario of equal branching fractions to each lepton flavor, heavy fermions with masses below 840 gev are excluded. this is the most sensitive probe to date of the type-iii seesaw mechanism.
WOS关键词	NEUTRINO MASS ; VIOLATION ; SIGNALS ; NUMBER ; MODELS ; LHC
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000416852200004
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2178302
专题	高能物理研究所
通讯作者	Sirunyan, A. M.
作者单位	1.Yerevan Phys Inst, Yerevan, Armenia 2.Inst Hochenergiephys, Vienna, Austria 3.Inst Nucl Problems, 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	Sirunyan, A. M.,Tumasyan, A.,Adam, W.,et al. Search for evidence of the type-iii seesaw mechanism in multilepton final states in proton-proton collisions at root s=13 tev[J]. Physical review letters,2017,119(22):17.
APA	Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Ambrogi, F..,Asilar, E..,...&Oropeza Barrera, C..(2017).Search for evidence of the type-iii seesaw mechanism in multilepton final states in proton-proton collisions at root s=13 tev.Physical review letters,119(22),17.
MLA	Sirunyan, A. M.,et al."Search for evidence of the type-iii seesaw mechanism in multilepton final states in proton-proton collisions at root s=13 tev".Physical review letters 119.22(2017):17.

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