This paper presents the electron and photon energy calibration achieved with the ATLAS
detector using about 25 fb^-1-1 of LHC proton–proton collision data taken at centre-of-mass …

Measurements and searches performed with the ATLAS detector at the CERN LHC often
involve signatures with one or more prompt leptons. Such analyses are subject to 'fake/non …

The mass of the Higgs boson is measured in the H→ ZZ⁎→ 4 ℓ decay channel. The analysis
uses proton–proton collision data from the Large Hadron Collider at a centre-of-mass …

A search for the pair-production of vector-like quarks optimized for decays into a Z boson
and a third-generation Standard Model quark is presented, using the full Run 2 dataset …

The ATLAS experiment has developed extensive software and distributed computing
systems for Run 3 of the LHC. These systems are described in detail, including software …

A bstract Differential cross-sections are measured for the production of four charged leptons
in association with two jets. These measurements are sensitive to final states in which the …

A bstract A search for pair production of squarks or gluinos decaying via sleptons or weak
bosons is reported. The search targets a final state with exactly two leptons with same-sign …

A search is presented for the pair-production of heavy vector-like quarks in the lepton+ jets
final state using 140 fb− 1 of proton–proton collisions at s= 13 TeV collected with the ATLAS …

A measurement of the mass of the Higgs boson combining the $ H\to ZZ^{*}\to 4\ell $ and $
H\to\gamma\gamma $ decay channels is presented. The result is based on 140 fb $^{-1} $ of …

We report the highest-energy observation of entanglement, in top $-$ antitop quark events
produced at the Large Hadron Collider, using a proton $-$ proton collision data set with a …