Search for chargino-neutralino production using recursive jigsaw reconstruction in final states with two or three charged leptons in proton-proton collisions at root s=13 TeV with the ATLAS detector | |
ATLAS Collaboration | |
刊名 | PHYSICAL REVIEW D |
2018 | |
卷号 | 98期号:9页码:92012 |
ISSN号 | 2470-0010 |
DOI | 10.1103/PhysRevD.98.092012 |
文献子类 | Article |
英文摘要 | A search for electroweak production of supersymmetric particles is performed in two-lepton and three-lepton final states using recursive jigsaw reconstruction, a technique that assigns reconstructed objects to the most probable hemispheres of the decay trees, allowing one to construct tailored kinematic variables to separate the signal and background. The search uses data collected in 2015 and 2016 by the ATLAS experiment in root s = 13 TeV proton-proton collisions at the CERN Large Hadron Collider corresponding to an integrated luminosity of 36.1 fb(-1). Chargino-neutralino pair production, with decays via W/Z bosons, is studied in final states involving leptons and jets and missing transverse momentum for scenarios with large and intermediate mass splittings between the parent particle and lightest supersymmetric particle, as well as for the scenario where this mass splitting is close to the mass of the Z boson. The latter case is challenging since the vector bosons are produced with kinematic properties that are similar to those in Standard Model processes. Results are found to be compatible with the Standard Model expectations in the signal regions targeting large and intermediate mass splittings, and chargino-neutralino masses up to 600 GeV are excluded at 95% confidence level for a massless lightest supersymmetric particle. Excesses of data above the expected background are found in the signal regions targeting low mass splittings, and the largest local excess amounts to 3.0 standard deviations. |
电子版国际标准刊号 | 2470-0029 |
WOS关键词 | GLUINO PRODUCTION ; PP COLLISIONS ; SQUARK ; EXTENSION ; DECAY ; BOSON |
WOS研究方向 | Astronomy & Astrophysics ; Physics |
语种 | 英语 |
WOS记录号 | WOS:000450550000002 |
内容类型 | 期刊论文 |
源URL | [http://ir.ihep.ac.cn/handle/311005/286917] |
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 chargino-neutralino production using recursive jigsaw reconstruction in final states with two or three charged leptons in proton-proton collisions at root s=13 TeV with the ATLAS detector[J]. PHYSICAL REVIEW D,2018,98(9):92012. |
APA | ATLAS Collaboration.(2018).Search for chargino-neutralino production using recursive jigsaw reconstruction in final states with two or three charged leptons in proton-proton collisions at root s=13 TeV with the ATLAS detector.PHYSICAL REVIEW D,98(9),92012. |
MLA | ATLAS Collaboration."Search for chargino-neutralino production using recursive jigsaw reconstruction in final states with two or three charged leptons in proton-proton collisions at root s=13 TeV with the ATLAS detector".PHYSICAL REVIEW D 98.9(2018):92012. |
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。
修改评论