Now showing items 41-60 of 189

• #### Measurement of the azimuthal anisotropy of charged particles produced in √sNN= 5.02 TeV Pb+Pb collisions with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-12)
Measurements of the azimuthal anisotropy in lead&ndash;lead collisions at &radic;sNN&nbsp;= 5.02&nbsp;TeV are presented using a data sample corresponding to 0.49&nbsp;nb&minus;1 integrated luminosity collected by the ATLAS ...
• #### A measurement of the calorimeter response to single hadrons and determination of the jet energy scale uncertainty using LHC Run-1 $pp$-collision data with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2017-01)
A measurement of the calorimeter response to isolated charged hadrons in the ATLAS detector at the LHC is presented. This measurement is performed with 3.2 nb$^{-1}$ of proton--proton collision data at $\sqrt{s}=7$ TeV ...
• #### Measurement of the cross section for isolated-photon plus jet production in pp collisions at √s = 13 TeV using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-05)
The dynamics of isolated-photon production in association with a jet in proton–proton collisions at a centre-of-mass energy of 13 TeV are studied with the ATLAS detector at the LHC using a dataset with an integrated ...
• #### Measurement of the exclusive γγ → μ+ μ− process in proton–proton collisions at √s = 13 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2017-12-20)
The production of exclusive events in proton–proton collisions at a centre-of-mass energy of 13 TeV is measured with the ATLAS detector at the LHC, using data corresponding to an integrated luminosity of 3.2 fb−1. The ...
• #### Measurement of the four-lepton invariant mass spectrum in 13 TeV proton-proton collisions with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2019-04-05)
A measurement of the four-lepton invariant mass spectrum is made with the ATLAS detector, using an integrated luminosity of 36.1 fb−1 of proton-proton collisions at s√ = 13 TeV delivered by the Large Hadron Collider. The ...
• #### Measurement of the Higgs boson coupling properties in the H → ZZ∗ → 4ℓ decay channel at s√=13TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-03-15)
The coupling properties of the Higgs boson are studied in the four-lepton (e, μ) decay channel using 36.1 fb−1 of pp collision data from the LHC at a centre-of-mass energy of 13 TeV collected by the ATLAS detector. Cross ...
• #### Measurement of the Higgs boson mass in the H → ZZ⁎ → 4ℓ and H → γγ channels with √s = 13 TeV pp collisions using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-09-10)
The mass of the Higgs boson is measured in the H → Z Z∗ → 4 and in the H → γγ decay channels with 36.1 fb−1 of proton–proton collision data from the Large Hadron Collider at a centre-of-mass energy of 13 TeV recorded by ...
• #### Measurement of the inclusive and fiducial tt¯ production cross-sections in the lepton+jets channel in pp collisions at √s=8 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-06-12)
The inclusive and fiducial 𝑡𝑡¯ production cross-sections are measured in the lepton+jets channel using 20.2 fb−1 of proton–proton collision data at a centre-of-mass energy of 8 TeV recorded with the ATLAS detector at the ...
• #### Measurement of the nuclear modification factor for inclusive jets in Pb+Pb collisions at √sNN=5,02 TeVwith the ATLAS detector ﻿

(Peer reviewed; Journal article, 2019)
Measurements of the yield and nuclear modification factor, RAA, for inclusive jet production are performed using 0.49 nb−1 of Pb+Pb data at √sNN = 5.02 TeV and 25 pb−1 of pp data at √s = 5.02 TeV with the ATLAS detector ...
• #### Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run 2 data collected in 2015 and 2016 ﻿

(Peer reviewed; Journal article, 2019-03-07)
The efficiency of the photon identification criteria in the ATLAS detector is measured using 36.1 fb1 to 36.7 fb1 of pp collision data at s√=13 TeV collected in 2015 and 2016. The efficiencies are measured separately for ...
• #### 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 a single top quark in association with a Z boson in proton–proton collisions at 13 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-03-14)
The production of a top quark in association with a Z boson is investigated. The proton–proton collision data collected by the ATLAS experiment at the LHC in 2015 and 2016 at a centre-of-mass energy of are used, corresponding ...
• #### Measurement of the prompt $J/\psi$ pair production cross-section in pp collisions at $\sqrt{s} = 8$ TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2017-02)
The production of two prompt $J/\psi$ mesons, each with transverse momenta $p_{\mathrm{T}}>8.5$ GeV and rapidity $|y| < 2.1$, is studied using a sample of proton-proton collisions at $\sqrt{s} = 8$ TeV, corresponding ...
• #### Measurement of the ratio of cross sections for inclusive isolated-photon production in pp collisions at √s= 13 and 8 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2019-04-12)
The ratio of the cross sections for inclusive isolated-photon production in pp collisions at centre-of-mass energies of 13 and 8 TeV is measured using the ATLAS detector at the LHC. The integrated luminosities of the 13 ...
• #### 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 top quark mass in the tt¯→lepton+jets channel from √s=8 TeV ATLAS data and combination with previous results ﻿

(Peer reviewed; Journal article, 2019)
The top quark mass is measured using a template method in the tt¯→lepton+jets channel (lepton is e or μ) using ATLAS data recorded in 2012 at the LHC. The data were taken at a proton–proton centre-of-mass energy of s√=8 ...
• #### Measurement of the t¯tZ and t¯tW cross sections in proton-proton collisions at √s=13  TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2019)
A measurement of the associated production of a top-quark pair ( t ¯ t ) with a vector boson ( W , Z ) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented, using 36.1     fb − 1 of integrated ...
• #### Measurement of the W-boson mass in pp collisions at s√=7TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-02-06)
A measurement of the mass of the W boson is presented based on proton–proton collision data recorded in 2011 at a centre-of-mass energy of 7 TeV with the ATLAS detector at the LHC, and corresponding to 4.6 fb−1 of integrated ...
• #### Measurement of the Zγ→νν¯¯γ production cross section in pp collisions at √s=13 TeV with the ATLAS detector and limits on anomalous triple gauge-boson couplings ﻿

(Peer reviewed; Journal article, 2018)
The production of Z bosons in association with a high-energy photon (Zγ production) is studied in the neutrino decay channel of the Z boson using pp collisions at s√=13 TeV. The analysis uses a data sample with an integrated ...