Now showing items 1-20 of 63

• #### Constraints on non-Standard Model Higgs boson interactions in an effective Lagrangian using differential cross sections measured in the H→γγ decay channel at s√=8 TeV with the ATLAS detector ﻿

(Elsevier BV, 2016)
The strength and tensor structure of the Higgs boson's interactions are investigated within an effective field theory framework, which allows new CP-even and CP-odd interactions that can lead to changes in the kinematic ...
• #### Determination of the ratio of b-quark fragmentation fractions fs/fd in pp collisions at s√=7 TeV with the ATLAS detector ﻿

(American Physical Society (APS), 2015)
With an integrated luminosity of 2.47 fb−1 recorded by the ATLAS experiment at the LHC, the exclusive decays B0s→J/ψϕ and B0d→J/ψK∗0 of B mesons produced in pp collisions at s√=7 TeV are used to determine the ratio of ...
• #### Dijet production in s√=7 TeV pp collisions with large rapidity gaps at the ATLAS experiment ﻿

(Elsevier BV, 2016)
A 6.8 nb−1 sample of pp collision data collected under low-luminosity conditions at s√=7 TeV by the ATLAS detector at the Large Hadron Collider is used to study diffractive dijet production. Events containing at least two ...
• #### Electron efficiency measurements with the ATLAS detector using 2012 LHC proton–proton collision data ﻿

(Springer Nature, 2017)
This paper describes the algorithms for the reconstruction and identification of electrons in the central region of the ATLAS detector at the Large Hadron Collider (LHC). These algorithms were used for all ATLAS results ...
• #### Evidence for single top-quark production in the s-channel in proton-proton collisions at s√=8 TeV with the ATLAS detector using the Matrix Element Method ﻿

(Elsevier BV, 2016)
This Letter presents evidence for single top-quark production in the s-channel using proton-proton collisions at a centre-of-mass energy of 8 TeV with the ATLAS detector at the CERN Large Hadron Collider. The analysis is ...
• #### High-ET isolated-photon plus jets production in pp collisions at s√= 8 TeV with the ATLAS detector ﻿

(Elsevier BV, 2017)
The dynamics of isolated-photon plus one-, two- and three-jet production in pp collisions at a centre-of-mass energy of 8 TeV are studied with the ATLAS detector at the LHC using a data set with an integrated luminosity ...
• #### Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at s√=8 TeV ﻿

(Springer Nature, 2016)
This paper reports a detailed study of techniques for identifying boosted, hadronically decaying W bosons using 20fb−1 of proton-proton collision data collected by the ATLAS detector at the LHC at a centre-of-mass energy ...
• #### Measurement of D∗±, D± and D±s meson production cross sections in pp collisions at s√=7 TeV with the ATLAS detector ﻿

(Elsevier BV, 2016)
The production of D∗±, D± and D±s charmed mesons has been measured with the ATLAS detector in pp collisions at s√=7 TeV at the LHC, using data corresponding to an integrated luminosity of 280nb−1. The charmed mesons have ...
• #### Measurement of four-jet differential cross sections in s√=8 TeV proton-proton collisions using the ATLAS detector ﻿

(Springer Nature, 2015)
Differential cross sections for the production of at least four jets have been measured in proton-proton collisions at s√=8 TeV at the Large Hadron Collider using the ATLAS detector. Events are selected if the four anti-kt ...
• #### Measurement of jet activity produced in top-quark events with an electron, a muon and two b-tagged jets in the final state in pp collisions at s√=13 TeV with the ATLAS detector ﻿

(Springer Nature, 2017)
Measurements of jet activity in top-quark pair events produced in proton--proton collisions are presented, using 3.2 fb−1 of pp collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS experiment at the ...
• #### Measurement of the bb¯ Dijet Cross Section in pp Collisions at √s=7 TeV With the ATLAS Detector ﻿

(Springer Nature, 2016)
The dijet production cross section for jets containing a b-hadron (b-jets) has been measured in proton–proton collisions with a centre-of-mass energy of √s=7 TeV, using the ATLAS detector at the LHC. The data used correspond ...
• #### Measurement of the branching ratio Γ(Λ0b→ψ(2S)Λ0)/Γ(Λ0b→J/ψΛ0) with the ATLAS detector ﻿

(Elsevier BV, 2015)
An observation of the Λ0b→ψ(2S)Λ0 decay and a comparison of its branching fraction with that of the Λ0b→J/ψΛ0 decay has been made with the ATLAS detector in proton--proton collisions at s√=8TeV at the LHC using an integrated ...
• #### Measurement of the Charge Asymmetry in Top-Quark Pair Production in the Lepton-Plus-Jets Final State in pp Collision Data at √s = 8 TeV With the ATLAS Detector ﻿

(Springer Nature, 2016)
This paper reports inclusive and differential measurements of the tt¯tt¯ charge asymmetry ACAC in 20.3 fb−120.3 fb−1 of s√=8 TeVs=8 TeV pppp collisions recorded by the ATLAS experiment at the Large Hadron Collider ...
• #### Measurement of the correlations between the polar angles of leptons from top quark decays in the helicity basis at s√=7TeV using the ATLAS detector ﻿

(American Physical Society (APS), 2016)
A measurement of the correlations between the polar angles of leptons from the decay of pair-produced t and t¯ quarks in the helicity basis is reported, using proton-proton collision data collected by the ATLAS detector ...
• #### Measurement of the cross section for inclusive isolated-photon production in pp collisions at s√=13 TeV using the ATLAS detector ﻿

(Elsevier BV, 2017)
Inclusive isolated-photon production in pp collisions at a centre-of-mass energy of 13 TeV is studied with the ATLAS detector at the LHC using a data set with an integrated luminosity of 3.2 fb−1. The cross section is ...
• #### Measurement of the dependence of transverse energy production at large pseudorapidity on the hard-scattering kinematics of proton-proton collisions at s√=2.76 TeV with ATLAS ﻿

(Elsevier BV, 2016)
The relationship between jet production in the central region and the underlying-event activity in a pseudorapidity-separated region is studied in 4.0 pb−1 of s√=2.76 TeV pp collision data recorded with the ATLAS detector ...
• #### Measurement of the differential cross-section of highly boosted top quarks as a function of their transverse momentum in s√ = 8 TeV proton-proton collisions using the ATLAS detector ﻿

(American Physical Society (APS), 2016)
The differential cross-section for pair production of top quarks with high transverse momentum is measured in 20.3 fb−1 of proton-proton collisions at a center-of-mass energy of 8 TeV. The measurement is performed for tt¯ ...
• #### Measurement of the Differential Cross-Sections of Prompt and Non-Prompt Production of J/ψ and ψ(2S) in Pp Collisions at √s=7 and 8 TeV With the ATLAS Detector ﻿

(Springer Nature, 2016)
The production rates of prompt and non-prompt J/ψ and ψ(2S) mesons are measured using 2.1 fb−1 and 11.4 fb−1 of data collected with the ATLAS experiment at the LHC, in proton-proton collisions at s√=7 and 8 TeV respectively. ...
• #### Measurement of the production cross-section of a single top quark in association with a W boson at 8 TeV with the ATLAS experiment ﻿

(Springer Nature, 2016)
The cross-section for the production of a single top quark in association with a W boson in proton--proton collisions at s√=8 TeV is measured. The dataset corresponds to an integrated luminosity of 20.3 fb−1, collected by ...
• #### Measurement of the prompt J/ψ pair production cross-section in pp collisions at √s=8 TeV with the ATLAS detector ﻿

(Springer Nature, 2017)
The production of two prompt J/ψ mesons, each with transverse momenta pT>8.5 GeV and rapidity |y|<2.1, is studied using a sample of proton-proton collisions at √s=8 TeV, corresponding to an integrated luminosity of 11.4 ...