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Now showing items 41-50 of 55
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
This paper presents a measurement of the top quark pair ( tt¯ ) production charge asymmetry A C using 4.7 fb−1 of proton-proton collisions at a centre-of-mass energy s√ = 7 TeV collected by the ATLAS detector at the LHC. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search for strongly produced supersymmetric particles is conducted using signatures involving multiple energetic jets and either two isolated leptons (e or μ) with the same electric charge, or at least three isolated ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The prompt and non-prompt production cross-sections for ψ(2S) mesons are measured using 2.1 fb−1 of pp collision data at a centre-of-mass energy of 7 TeV recorded by the ATLAS experiment at the LHC. The measurement exploits ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
ATLAS measurements of the azimuthal anisotropy in lead–lead collisions at √sNN = 2.76 TeV are shown using a dataset of approximately 7μb−1 collected at the LHC in 2010. The measurements are performed for charged particles ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
This paper presents the electron and photon energy calibration achieved with the ATLAS detector using about 25 fb −1 of LHC proton–proton collision data taken at centre-of-mass energies of s√=7 and 8 TeV. The reconstruction ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A likelihood-based discriminant for the identification of quark- and gluon-initiated jets is built and validated using 4.7 fb −1 of proton–proton collision data at s√=7 TeV collected with the ATLAS detector at the LHC. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search is conducted for non-resonant new phenomena in dielectron and dimuon final states, originating from either contact interactions or large extra spatial dimensions. The LHC 2012 proton–proton collision dataset ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A measurement of charged-particle distributions sensitive to the properties of the underlying event is presented for an inclusive sample of events containing a Z-boson, decaying to an electron or muon pair. The measurement ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The ratio of the production cross sections for W and Z bosons in association with jets has been measured in proton–proton collisions at s√=7TeV with the ATLAS experiment at the Large Hadron Collider. The measurement is ...