2020年11月
Evidence for tt¯ tt¯ production in the multilepton final state in proton–proton collisions at √s=13 TeV with the ATLAS detector
European Physical Journal C
- 巻
- 80
- 号
- 11
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1140/epjc/s10052-020-08509-3
A search is presented for four-top-quark production using an integrated luminosity of 139 fb- 1 of proton–proton collision data at a centre-of-mass energy of 13TeV collected by the ATLAS detector at the LHC. Events are selected if they contain a same-sign lepton pair or at least three leptons (electrons or muons). Jet multiplicity, jet flavour and event kinematics are used to separate signal from the background through a multivariate discriminant, and dedicated control regions are used to constrain the dominant backgrounds. The four-top-quark production cross section is measured to be 24-6+7 fb. This corresponds to an observed (expected) significance with respect to the background-only hypothesis of 4.3 (2.4) standard deviations and provides evidence for this process.
- リンク情報
- ID情報
-
- DOI : 10.1140/epjc/s10052-020-08509-3
- ISSN : 1434-6044
- eISSN : 1434-6052
- SCOPUS ID : 85096516887