Viser treff 41-60 av 139

• #### Measurement of the production cross section of three isolated photons in pp collisions at √s = 8 TeV using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-03-23)
A measurement of the production of three isolated photons in proton–proton collisions at a centre-of-mass energy TeV is reported. The results are based on an integrated luminosity of 20.2 fb−1 collected with the ATLAS ...
• #### Measurement of the production cross-section of ψ(2S) → J/ψ(→μ+μ−)π+π− in pp collisions at √s = 7 TeV at ATLAS ﻿

(Peer reviewed; Journal article, 2014-09-12)
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 ...
• #### A measurement of the ratio of the production cross sections for W and Z bosons in association with jets with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-12-02)
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 ...
• #### Measurement of the soft-drop jet mass in pp collisions at √s=13  TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-08)
Jet substructure observables have significantly extended the search program for physics beyond the standard model at the Large Hadron Collider. The state-of-the-art tools have been motivated by theoretical calculations, ...
• #### Measurement of the suppression and azimuthal anisotropy of muons from heavy-flavor decays in Pb+Pb collisions at √sNN=2.76 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-10)
ATLAS measurements of the production of muons from heavy-flavor decays in&nbsp;&radic;sNN=2.76&nbsp;TeV Pb+Pb collisions and&nbsp;&radic;s=2.76&nbsp;TeV&nbsp;pp&nbsp;collisions at the LHC are presented. Integrated luminosities ...
• #### Measurement of the t(Formula Presented.) production cross-section as a function of jet multiplicity and jet transverse momentum in 7 TeV proton-proton collisions with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2015-01-08)
The tt⎯⎯ production cross-section dependence on jet multiplicity and jet transverse momentum is reported for proton-proton collisions at a centre-of-mass energy of 7 TeV in the single-lepton channel. The data were collected ...
• #### Measurement of the top quark pair production charge asymmetry in proton-proton collisions at √s = 7 TeV using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-02)
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. ...
• #### Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at $\sqrt{s}=7$ TeV ﻿

(Peer reviewed; Journal article, 2015-04-23)
The mass of the top quark is measured in a data set corresponding to 4.6 fb$^{−1}$ of proton--proton collisions with centre-of-mass energy $\sqrt{s}=7$ TeV collected by the ATLAS detector at the LHC. Events consistent ...
• #### Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-08)
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. ...
• #### Measurement of the Z/γ* boson transverse momentum distribution in pp collisions at √s = 7 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-09-24)
This paper describes a measurement of the Z/γ * boson transverse momentum spectrum using ATLAS proton-proton collision data at a centre-of-mass energy of s√=7 TeV at the LHC. The measurement is performed in the Z/γ * → e ...
• #### Measurement of three-jet production cross-sections in pp collisions at 7 TeV centre-of-mass energy using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2015-05-27)
Double-differential three-jet production cross-sections are measured in proton–proton collisions at a centre-of-mass energy of s√=7TeV using the ATLAS detector at the large hadron collider. The measurements are presented ...
• #### Measurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s = 13 TeV ﻿

(Peer reviewed; Journal article, 2018-08)
The efficiency to identify jets containing&nbsp;b-hadrons (b-jets) is measured using a high purity sample of dileptonic top quark-antiquark pairs (tt&macr;tt&macr;) selected from the 36.1 fb&minus;1&nbsp;of data collected ...
• #### Measurements of differential cross sections of top quark pair production in association with jets in pp collisions at √s=13 TeV using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-10)
Measurements of differential cross sections of top quark pair production in association with jets by the ATLAS experiment at the LHC are presented. The measurements are performed as functions of the top quark transverse ...
• #### Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at √s=8 TeV with ATLAS ﻿

(Peer reviewed; Journal article, 2014-09-19)
Measurements of fiducial and differential cross sections are presented for Higgs boson production in proton-proton collisions at a centre-of-mass energy of s√=8 TeV. The analysis is performed in the H → γγ decay channel ...
• #### Measurements of four-lepton production at the Z resonance in pp collisions at √s = 7 and 8 TeV with ATLAS ﻿

(Peer reviewed; Journal article, 2014-06-13)
Measurements of four-lepton (4ℓ, ℓ=e,μ) production cross sections at the Z resonance in pp collisions at the LHC with the ATLAS detector are presented. For dilepton and four-lepton invariant mass regions mℓ+ℓ−>5  GeV and ...
• #### Measurements of jet vetoes and azimuthal decorrelations in dijet events produced in $pp$ collisions at $\sqrt{s}$ = 7 TeV using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-11)
Additional jet activity in dijet events is measured using $pp$ collisions at ATLAS at a centre-of-mass energy of 7 TeV, for jets reconstructed using the anti-kt algorithm with radius parameter R=0.6. This is done using ...
• #### Measurements of normalized differential cross-sections for $t\bar{t}$ production in $pp$ collisions at $\sqrt{s}$=7 TeV using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-10)
Measurements of normalized differential cross-sections for top-quark pair production are presented as a~function of the top-quark transverse momentum, and of the mass, transverse momentum, and rapidity of the $t\bar{t}$ ...
• #### Measurements of spin correlation in top-antitop quark events from proton-proton collisions at $\sqrt{s}=7$ TeV using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-12-24)
Measurements of spin correlation in top quark pair production are presented using data collected with the ATLAS detector at the LHC with proton--proton collisions at a center-of-mass energy of 7 TeV, corresponding to an ...
• #### Measurements of the W production cross sections in association with jets with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2015-02-19)
This paper presents cross sections for the production of a W boson in association with jets, measured in proton–proton collisions at √s=7TeV with the ATLAS experiment at the large hadron collider. With an integrated ...
• #### Measurements of t¯t differential cross-sections of highly boosted top quarks decaying to all-hadronic final states in pp collisions at √s=13  TeV using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-07-25)
Measurements are made of differential cross-sections of highly boosted pair-produced top quarks as a function of top-quark and tt system kinematic observables using proton-proton collisions at a center-of-mass energy of ...