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Now showing items 21-30 of 87
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The production of a prompt photon in association with a Z boson is studied in proton-proton collisions at a centre-of-mass energy s√ = 13 TeV. The analysis uses a data sample with an integrated luminosity of 139 fb−1 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
A search for long-lived particles decaying into hadrons and at least one muon is presented. The analysis selects events that pass a muon or missing-transverse-momentum trigger and contain a displaced muon track and a ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
A search for dijet resonances in events with at least one isolated charged lepon is performed using 139 fb−1 of s√ = 13 TeV proton-proton collision data recorded by the ATLAS detector at the LHC. The dijet invariant-mass ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
A search for a chargino-neutralino pair decaying via the 125 GeV Higgs boson into photons is presented. The study is based on the data collected between 2015 and 2018 with the ATLAS detector at the LHC, corresponding to ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
A search for new-physics resonances decaying into a lepton and a jet performed by the ATLAS experiment is presented. Scalar leptoquarks pair-produced in pp collisions at s√ = 13 TeV at the Large Hadron Collider are considered ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of s√ = 13 TeV with the ATLAS detector at the Large ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The combination of measurements of the W boson polarization in top quark decays performed by the ATLAS and CMS collaborations is presented. The measurements are based on proton-proton collision data produced at the LHC at ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
A bstract
The factor of four increase in the LHC luminosity, from 0 . 5 × 10 34 cm − 2 s − 1 to 2 . 0 × 10 34 cm − 2 s − 1 , and the corresponding increase in pile-up collisions during the 2015–2018 data-taking period, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The top anti-top quark production cross-section is measured in the lepton+jets channel using proton–proton collision data at a centre-of-mass energy of √s = 13 TeV collected with the ATLAS detector at the LHC. The dataset ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Inclusive and differential fiducial cross sections of the Higgs boson are measured in the H→ZZ∗→4ℓ (ℓ=e,μ) decay channel. The results are based on proton-proton collision data produced at the Large Hadron Collider at a ...