A search for events containing four top quarks (tt¯tt¯) is reported from proton–proton collisions recorded by the CMS experiment at √s=13 TeV and corresponding to an integrated luminosity of 2.6 fb−1. The analysis considers the single-lepton (e or μ)+jets and the opposite-sign dilepton (μ+μ−, μ±e∓ , or e+e−)+jets channels. It uses boosted decision trees to combine information on the global event and jet properties to distinguish between tt¯tt¯ and tt¯ production. The number of events observed after all selection requirements is consistent with expectations from background and standard model signal predictions, and an upper limit is set on the cross section for tt¯tt¯ production in the standard model of 94 fb at 95% confidence level (1...
A search for standard model production of four top quarks (tt¯tt¯) is reported using events containi...
A search for standard model production of four top quarks (tt¯tt¯) is reported using events containi...
A search for standard model production of four top quarks (t t ¯ t t ¯) is reported using events con...
A search for events containing four top quarks ( tt¯tt¯ ) is reported from proton–proton collisions ...
A search for events containing four top quarks (tt¯tt¯) is reported from proton–proton collisions re...
A search for events containing four top quarks () is reported from proton\u2013proton collisions rec...
A search for events containing four top quarks (tt-bar tt-bar) is reported from proton–proton collis...
A search for events containing four top quarks ($t\overline tt\overline t$) is reported from proton–...
A search for events containing four top quarks () is reported from proton–proton collisions recorded...
A search for events containing four top quarks (t (t) over bart (t) over bar) is reported from proto...
A search for events containing four top quarks (tt¯tt¯) is reported from proton–proton collisions re...
A search for events containing four top quarks (tt¯tt¯) is reported from proton–proton collisions re...
A search for events containing four top quarks (tt¯tt¯) is reported from proton–proton collisions re...
A search for events containing four top quarks (tt¯tt¯) is reported from proton–proton collisions re...
A search for standard model production of four top quarks (tt¯tt¯) is reported using events containi...
A search for standard model production of four top quarks (tt¯tt¯) is reported using events containi...
A search for standard model production of four top quarks (t t ¯ t t ¯) is reported using events con...
A search for events containing four top quarks ( tt¯tt¯ ) is reported from proton–proton collisions ...
A search for events containing four top quarks (tt¯tt¯) is reported from proton–proton collisions re...
A search for events containing four top quarks () is reported from proton\u2013proton collisions rec...
A search for events containing four top quarks (tt-bar tt-bar) is reported from proton–proton collis...
A search for events containing four top quarks ($t\overline tt\overline t$) is reported from proton–...
A search for events containing four top quarks () is reported from proton–proton collisions recorded...
A search for events containing four top quarks (t (t) over bart (t) over bar) is reported from proto...
A search for events containing four top quarks (tt¯tt¯) is reported from proton–proton collisions re...
A search for events containing four top quarks (tt¯tt¯) is reported from proton–proton collisions re...
A search for events containing four top quarks (tt¯tt¯) is reported from proton–proton collisions re...
A search for events containing four top quarks (tt¯tt¯) is reported from proton–proton collisions re...
A search for standard model production of four top quarks (tt¯tt¯) is reported using events containi...
A search for standard model production of four top quarks (tt¯tt¯) is reported using events containi...
A search for standard model production of four top quarks (t t ¯ t t ¯) is reported using events con...