A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the Large Hadron Collider corresponding to an integrated luminosity of 139 fb−1 is presented. Events are selected if they contain a single lepton (electron or muon) or an opposite-sign lepton pair, in association with multiple jets. The events are categorised according to the number of jets and how likely these are to contain b-hadrons. A multivariate technique is then used to discriminate between signal and background events. The measured four-top-quark production cross section is found to be 26−15+17 fb, with a corresponding observed (expected) significance of 1.9 (1.0) standard deviations o...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass en...