Now showing items 41-60 of 168

• #### 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 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 $t\bar t \to {\rm lepton+jets}$ and $t\bar t \to {\rm dilepton}$ channels using $\sqrt{s}=7$ TeV ATLAS data ﻿

(Peer reviewed; Journal article, 2015-07)
The top quark mass was measured in the channels $t\bar{t} \to \mathrm{lepton+jets}$ and $t\bar{t} \to \mathrm{dilepton}$ (lepton=$e, \mu$) based on ATLAS data recorded in 2011. The data were taken at the LHC with a ...
• #### 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 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 ...
• #### Measurement of W±Z production cross sections and gauge boson polarisation in pp collisions at √s=13 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2019-06-22)
This paper presents measurements of W±Z production cross sections in pp collisions at a centre-of-mass energy of 13 TeV. The data were collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider, and ...
• #### Measurement of τ polarisation in Z/γ∗→ττ decays in proton–proton collisions at s√=8 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018-02)
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 ...
• #### 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 electroweak $Wjj$ production and constraints on anomalous gauge couplings with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2017-07)
Measurements of the electroweak production of a $W$ boson in association with two jets at high dijet invariant mass are performed using $\sqrt{s} = 7$ and $8$ TeV proton--proton collision data produced by the Large ...
• #### Measurements of gluon–gluon fusion and vector-boson fusion Higgs boson production cross-sections in the H → WW⁎ → eνμν decay channel in pp collisions at √s=13 TeVwith the ATLAS detector ﻿

(Peer reviewed; Journal article, 2019-02-10)
Higgs boson production cross-sections in proton–proton collisions are measured in the H→W W ∗→eνμν decay channel. The proton–proton collision data were produced at the Large Hadron Collider at a centreof-mass energy of 13 ...
• #### Measurements of inclusive and differential fiducial cross-sections of tt¯ production with additional heavy-flavour jets in proton-proton collisions at √s = 13 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2019-04-04)
This paper presents measurements of tt¯ production in association with additional b-jets in pp collisions at the LHC at a centre-of-mass energy of 13 TeV. The data were recorded with the ATLAS detector and correspond to ...
• #### Measurements of the production cross section of a $Z$ boson in association with jets in pp collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2017-06)
Measurements of the production cross section of a $Z$ boson in association with jets in proton-proton collisions at $\sqrt{s} = 13$ TeV are presented, using data corresponding to an integrated luminosity of 3.16 ...
• #### 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 ...
• #### Measurements of W and Z boson production in pp collisions at √s=5.02 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2019-02-11)
Measurements of fiducial integrated and differential cross sections for inclusive W+, W− and Z boson production are reported. They are based on 25.0±0.5pb−1 of pp collision data at s√=5.02 TeV collected with the ATLAS ...