# Evidence for tt¯ tt¯ production in the multilepton final state in proton–proton collisions at √s=13 TeV with the ATLAS detector

Atlas Collaboration

10 被引用数 (Scopus)

## 抄録

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.

本文言語 英語 1085 European Physical Journal C 80 11 https://doi.org/10.1140/epjc/s10052-020-08509-3 出版済み - 11 2020

## All Science Journal Classification (ASJC) codes

• 工学（その他）
• 物理学および天文学（その他）

## フィンガープリント

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