Search
Now showing items 501-600 of 600
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
A measurement of the mass of the Higgs boson combining the H→ZZ∗→4ℓ and H→γγ decay channels is presented. The result is based on 140 fb−1 of proton-proton collision data collected by the ATLAS detector during LHC run 2 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The results of a search for top squark (stop) pair production in final states with one isolated lepton, jets, and missing transverse momentum are reported. The analysis is performed with proton-proton collision data at s√ ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search for supersymmetry (SUSY) in events with large missing transverse momentum, jets, at least one hadronically decaying tau lepton and zero or one additional light leptons (electron/muon), has been performed using ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search for squarks and gluinos in final states containing high-p T jets, missing transverse momentum and no electrons or muons is presented. The data were recorded in 2012 by the ATLAS experiment in s√=8 TeV proton-proton ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search is presented for the production of new heavy quarks that decay to a Z boson and a third-generation Standard Model quark. In the case of a new charge +2/3 quark (T ), the decay targeted is T → Zt, while the decay ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Measurements of fiducial cross sections for the electroweak production of two jets in association with a Z-boson are presented. The measurements are performed using 20.3 fb−1 of proton-proton collision data collected at a ...
(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)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
A measurement of \(W\) boson production in lead-lead collisions at \(\sqrt{s_{\mathrm {NN}}}=2.76\mathrm {\ TeV}\) is presented. It is based on the analysis of data collected with the ATLAS detector at the LHC in 2011 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
We describe a system designed to re-bunch positron pulses delivered by an accumulator supplied by a positron source and a Surko-trap. Positron pulses from the accumulator are magnetically guided in a 0.085 T field and are ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Distributions sensitive to the underlying event in QCD jet events have been measured with the ATLAS detector at the LHC, based on 37 pb−1 of proton–proton collision data collected at a centre-of-mass energy of 7 TeV . ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The differential cross section for the process Z/γ ∗ → ℓℓ (ℓ = e, μ) as a function of dilepton invariant mass is measured in pp collisions at s√ = 7 TeV at the LHC using the ATLAS detector. The measurement is performed in ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
A search for the direct production of charginos and neutralinos in final states with three electrons or muons and missing transverse momentum is presented. The analysis is based on 4.7 fb−14.7 fb−1 of View the MathML ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search for the neutral Higgs bosons predicted by the Minimal Supersymmetric Standard Model (MSSM) is reported. The analysis is performed on data from proton-proton collisions at a centre-of-mass energy of 8 TeV collected ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search for an excess of events with multiple high transverse momentum objects including charged leptons and jets is presented, using 20.3 fb−1 of proton-proton collision data recorded by the ATLAS detector at the Large ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Several models of physics beyond the Standard Model predict neutral particles that decay into final states consisting of collimated jets of light leptons and hadrons (so-called “lepton jets”). These particles can also be ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The precise measurement of forces is one way to obtain deep insight into the fundamental interactions present in nature. In the context of neutral antimatter, the gravitational interaction is of high interest, potentially ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
(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 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
This paper presents a study of the performance of the muon reconstruction in the analysis of proton–proton collisions at s√=7 TeV at the LHC, recorded by the ATLAS detector in 2010. This performance is described in terms ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Searches for heavy long-lived charged particles are performed using a data sample of 19.1 fb−1 from proton-proton collisions at a centre-of-mass energy of √s = 8 Tev collected by the ATLAS detector at the Large Hadron ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
The inclusive jet cross-section is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using a data set corresponding to an integrated luminosity of 4.5 fb−1 collected with the ATLAS detector at the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
This paper presents a measurement of the polarisation of τ leptons produced in Z/γ ∗ → τ τ decays which is performed with a dataset of proton—proton collisions at √s = 8 TeV, corresponding to an integrated luminosity of ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
The results of a search for direct pair production of top squarks and for dark matter in events with two opposite-charge leptons (electrons or muons), jets and missing transverse momentum are reported, using 139 fb−1 of ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Jet substructure has provided new opportunities for searches and measurements at the LHC, and has seen continuous development since the optimization of the large-radius jet definition used by ATLAS was performed during Run ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
A search for pair production of third-generation scalar leptoquarks decaying into a top quark and a τ-lepton is presented. The search is based on a dataset of pp collisions at s√ = 13 TeV recorded with the ATLAS detector ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
A search for new phenomena with top quark pairs in final states with one isolated electron or muon, multiple jets, and large missing transverse momentum is performed. Signal regions are designed to search for two-, three-, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
A search for a heavy neutral Higgs boson, A, decaying into a Z boson and another heavy Higgs boson, H, is performed using a data sample corresponding to an integrated luminosity of 139 fb−1 from proton–proton collisions ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
A search for high-mass charged and neutral bosons decaying to Wγ and Zγ final states is presented in this paper. The analysis uses a data sample of s√ = 13 TeV proton-proton collisions with an integrated luminosity of 139 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
This paper reports a search for Higgs boson pair (hh) production in association with a vector boson (WorZ) using 139 fb−1 of proton–proton collision data at s√=13TeV recorded with the ATLAS detector at the Large Hadron ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
Measurements and searches performed with the ATLAS detector at the CERN LHC often involve signatures with one or more prompt leptons. Such analyses are subject to `fake/non-prompt' lepton backgrounds, where either a hadron ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)