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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
The standard model of particle physics encapsulates our best current understanding of physics at the smallest scales. A fundamental axiom of this theory is the universality of the couplings of the different generations of ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
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 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Measurements of four-lepton differential and integrated fiducial cross-sections in events with two same-flavour, opposite-charge electron or muon pairs are presented. The data correspond to 139 fb−1 of s√ = 13 TeV proton-proton ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
The results of a search for gluino and squark pair production with the pairs decaying via the lightest charginos into a final state consisting of two W bosons, the lightest neutralinos (χ~01), and quarks, are presented: ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
The total cross section and differential cross sections for the production of B±c mesons, times their branching fraction to J/ψπ±, are measured relative to those for the production of B± mesons, times their branching ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Jet energy scale and resolution measurements with their associated uncertainties are reported for jets using 36–81 fb−1 of proton–proton collision data with a centre-of-mass energy of s√=13 TeV collected by the ATLAS ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
A search for new phenomena is presented in final states with two leptons and one or no b-tagged jets. The event selection requires the two leptons to have opposite charge, the same flavor (electrons or muons), and a large ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
A search for dark-matter particles in events with large missing transverse momentum and a Higgs boson candidate decaying into two photons is reported. The search uses 139 fb−1 of proton-proton collision data collected at ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)