Electron and photon triggers covering transverse energies from 5 GeV to several TeV are essential for the ATLAS experiment to record signals for a wide variety of physics: from Standard Model processes to searches for ...

The dynamics of isolated-photon plus two-jet production in pp collisions at a centre-of-mass energy of 13 TeV are studied with the ATLAS detector at the LHC using a dataset corresponding to an integrated luminosity of 36.1 ...

Jet substructure quantities are measured using jets groomed with the soft-drop grooming procedure in dijet events from 32.9  fb−1 of pp collisions collected with the ATLAS detector at √s=13  TeV. These observables are ...

Several models of physics beyond the Standard Model predict the existence of dark photons, light neutral particles decaying into collimated leptons or light hadrons. This paper presents a search for long-lived dark photons ...

The production yield of Z bosons is measured in the electron and muon decay channels in Pb+Pb collisions at √sNN=5.02 TeV with the ATLAS detector. Data from the 2015 LHC run corresponding to an integrated luminosity of ...

A search is presented for pair production of long-lived neutral particles using 33  fb−1 of √s=13  TeV proton–proton collision data, collected during 2016 by the ATLAS detector at the LHC. This search focuses on a topology ...

A dedicated sample of Large Hadron Collider proton-proton collision data at centre-of-mass energy s√ = 8 TeV is used to study inclusive single diffractive dissociation, pp → X p. The intact final-state proton is reconstructed ...