Search for evidence of the type-iii seesaw mechanism in multilepton final states in proton-proton collisions at root s=13 tev
文献类型：期刊论文
| 作者 | 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
 |
| 出版日期 | 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 |
| WOS记录号 | WOS:000416852200004 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.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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