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Observation of production at 13 TeV with the ATLAS detector
ATLAS Collaboration
This paper presents the first observation of top-quark pair production in association with two photons (). The measurement is performed in the single-lepton decay chann…
Transforming jet flavour tagging at ATLAS
ATLAS Collaboration
Jet flavour tagging enables the identification of jets originating from heavy-flavour quarks in proton-proton collisions at the Large Hadron Collider, playing a critical role in it…
A continuous calibration of the ATLAS flavour-tagging classifiers via optimal transportation maps
ATLAS Collaboration
A calibration of the ATLAS flavour-tagging algorithms using a new calibration procedure based on optimal transportation maps is presented. Simultaneous, continuous corrections to t…
Observation of double parton scattering in same-sign W boson pair production in pp collisions at TeV with the ATLAS detector
ATLAS Collaboration
This letter reports the measurement of double parton scattering in same-sign W boson pair production with the ATLAS detector. The data set used corresponds to an integrated luminos…
Search for heavy neutral leptons in decays of W bosons using leptonic and semi-leptonic displaced vertices in TeV collisions with the ATLAS detector
ATLAS Collaboration
A search is performed for long-lived heavy neutral leptons (HNLs), produced through the decay of a boson along with a muon or electron. Two channels are explored: a leptonic ch…
Measurement of the top quark mass with the ATLAS detector using events with a high transverse momentum top quark
ATLAS Collaboration
The mass of the top quark is measured using top-antitop-quark pair events with high transverse momentum top quarks. The dataset, collected with the ATLAS detector in proton--proton…