The standard model production of four top quarks is predicted to have a cross
section of the order of 12fb. The CMS Collaboration presents new results on
this rare production mechanism for Run 2 data collected in 2016 through 2018 at
13 TeV, considering event signatures containing zero to four electrons or
muons. This is the first time the all-hadronic channel is investigated in the
study of four top quarks, made possible through novel machine learning based
data-driven background estimation techniques.Comment: Talk at the 15th International Workshop on Top Quark Physics, Durham,
UK, 4-9 September 2022. 7 pages, 1 table, 6 figure
