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View article: A continuous calibration of the ATLAS flavour-tagging classifiers via optimal transportation maps
A continuous calibration of the ATLAS flavour-tagging classifiers via optimal transportation maps Open
View article: Search for emerging jets in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS experiment
Search for emerging jets in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS experiment Open
A search is presented for emerging jets using 140 fb$^{-1}$ of proton-proton collision data at $\sqrt{s} = 13$ TeV, collected by the ATLAS experiment between 2015 and 2018. The search looks for the existence of a dark sector with symmetrie…
View article: A search for high-mass resonances in final states with hadronically decaying tau leptons and high missing transverse momentum using $pp$-collision data at $\sqrt{s} = 13~\text{TeV}$ collected by the ATLAS Detector
A search for high-mass resonances in final states with hadronically decaying tau leptons and high missing transverse momentum using $pp$-collision data at $\sqrt{s} = 13~\text{TeV}$ collected by the ATLAS Detector Open
A search for new heavy charged gauge bosons $W^{\prime}$, predicted by some extensions of the Standard Model is presented in this thesis. This analysis is based on data collected from proton-proton collisions with a center-of-mass-energy o…
View article: Precise measurement of the $t\bar{t}$ production cross-section and lepton differential distributions in $eμ$ dilepton events from $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
Precise measurement of the $t\bar{t}$ production cross-section and lepton differential distributions in $eμ$ dilepton events from $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector Open
The inclusive top quark pair ($t\bar{t}$) cross-section $σ_{t\bar{t}}$ has been measured in $\sqrt{s}=13$ TeV proton-proton collisions, using 140 fb$^{-1}$ of data collected by the ATLAS experiment at the Large Hadron Collider. Using event…
View article: Observation of $W^{+}W^{-}γ$ production in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector and constraints on anomalous quartic gauge-boson couplings
Observation of $W^{+}W^{-}γ$ production in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector and constraints on anomalous quartic gauge-boson couplings Open
This Letter reports the observation of $W^{+}W^{-}γ$ triboson production in 140 fb$^{-1}$ of data collected by the ATLAS detector from proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 13 TeV at the LHC. Events with an op…
View article: Observation of structures in the $J/ψ+ψ(2S)$ mass spectrum with the ATLAS detector
Observation of structures in the $J/ψ+ψ(2S)$ mass spectrum with the ATLAS detector Open
A search for resonant structures in the $J/ψ+ψ$(2S) mass spectrum is performed using proton--proton collision data at $\sqrt{s}=13$ TeV, corresponding to an integrated luminosity of 140 fb$^{-1}$, recorded by the ATLAS experiment at the LH…
View article: Measurement of the azimuthal anisotropy of charged particles in $\sqrt{s_{\mathrm{NN}}}=5.36$ TeV $^{16}$O$+^{16}$O and $^{20}$Ne$+^{20}$Ne collisions with the ATLAS detector
Measurement of the azimuthal anisotropy of charged particles in $\sqrt{s_{\mathrm{NN}}}=5.36$ TeV $^{16}$O$+^{16}$O and $^{20}$Ne$+^{20}$Ne collisions with the ATLAS detector Open
This paper presents the first measurements of the azimuthal anisotropy coefficients $v_{n}$, which quantify the $n^{\mathrm{th}}$-order Fourier modulation of charged-particle azimuthal distributions, for $n=2$-4 in $\sqrt{s_{\mathrm{NN}}}=…
View article: Measurement of coherent exclusive $J/ψ\toμ^+μ^-$ production in ultraperipheral Pb+Pb collisions at $\sqrt{s_{\textrm{NN}}}=5.36$ TeV with the ATLAS detector
Measurement of coherent exclusive $J/ψ\toμ^+μ^-$ production in ultraperipheral Pb+Pb collisions at $\sqrt{s_{\textrm{NN}}}=5.36$ TeV with the ATLAS detector Open
The ATLAS experiment has performed a measurement of coherent exclusive $J/ψ\toμ^+μ^-$ production in ultraperipheral Pb+Pb collisions at $\sqrt{s_{\textrm{NN}}}=5.36$ TeV. The data was recorded at the Large Hadron Collider (LHC) during 2023…
View article: Search for Beyond the Standard Model physics with anomaly detection in multilepton final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Search for Beyond the Standard Model physics with anomaly detection in multilepton final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector Open
A model-agnostic search for Beyond the Standard Model physics is presented, targeting final states with at least four light leptons (electrons or muons). The search regions are separated by event topology and unsupervised machine learning …
View article: A Real‐Life Study on the Prevalence and Appropriateness of Artificial Nutrition in a Southern Italy Hospital
A Real‐Life Study on the Prevalence and Appropriateness of Artificial Nutrition in a Southern Italy Hospital Open
Background/Objectives. Nutrition therapy for diseased patients should satisfy patients’ nutritional needs and address the specific disease-related requirements. This study evaluated the prevalence and appropriateness of artificial nu…
View article: Observation of double parton scattering in same-sign W boson pair production in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Observation of double parton scattering in same-sign W boson pair production in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector Open
This letter reports the measurement of double parton scattering in same-sign W boson pair production with the ATLAS detector. The data set used corresponds to an integrated luminosity of 140 fb$^{-1}$ of proton-proton collisions at a cente…
View article: Search for a new scalar decaying into new spin-1 bosons in four-lepton final states with the ATLAS detector
Search for a new scalar decaying into new spin-1 bosons in four-lepton final states with the ATLAS detector Open
View article: Measurement of high-mass $t\bar{t}\ell^{+}\ell^{-}$ production and lepton flavour universality-inspired effective field theory interpretations at $\sqrt{s}=13$ TeV with the ATLAS detector
Measurement of high-mass $t\bar{t}\ell^{+}\ell^{-}$ production and lepton flavour universality-inspired effective field theory interpretations at $\sqrt{s}=13$ TeV with the ATLAS detector Open
Measurements of $t\bar{t}\ell^{+}\ell^{-}$ production in the region of high dilepton invariant mass with effective field theory (EFT) interpretations are presented. They are performed using final states with three isolated leptons (electro…
View article: Search for electroweak production of vector-like leptons in $$\tau $$-lepton and b-jet final states in pp collisions at $$\sqrt{s}$$ = 13 TeV with the ATLAS detector
Search for electroweak production of vector-like leptons in $$\tau $$-lepton and b-jet final states in pp collisions at $$\sqrt{s}$$ = 13 TeV with the ATLAS detector Open
A search for pair-production of vector-like leptons is presented, considering their decays into a third-generation Standard Model (SM) quark and a vector leptoquark ( $$U_1$$ ) as predicted by an ultraviolet-complete extension of the S…
View article: Characterization of nuclear breakup as a function of hard-scattering kinematics using dijets measured by ATLAS in $p$+Pb collisions
Characterization of nuclear breakup as a function of hard-scattering kinematics using dijets measured by ATLAS in $p$+Pb collisions Open
This Letter analyzes the sensitivity of event geometry estimators to the initial-state kinematics of hard scattering in proton-lead collisions. This analysis uses dijets as a proxy for the parton-parton scattering configuration, correlatin…
View article: Weakly supervised anomaly detection for resonant new physics in the dijet final state using proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Weakly supervised anomaly detection for resonant new physics in the dijet final state using proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector Open
An anomaly detection search for narrow-width resonances beyond the Standard Model that decay into a pair of jets is presented. The search is based on 139 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}=13$ TeV recorded during 2015-2018 …
View article: Measurement of jet track functions in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Measurement of jet track functions in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector Open
Measurements of jet substructure are key to probing the energy frontier at colliders, and many of them use track-based observables which take advantage of the angular precision of tracking detectors. Theoretical calculations of track-based…
View article: A search for electroweak $t\bar{t}Wj$ production in multileptonic final states at $\sqrt{s} = 13$ TeV with the ATLAS detector and bounds on effective field theory operators
A search for electroweak $t\bar{t}Wj$ production in multileptonic final states at $\sqrt{s} = 13$ TeV with the ATLAS detector and bounds on effective field theory operators Open
A search is presented for the electroweak production of a top quark pair in association with a $W$ boson and at least one additional jet, known as the ${t\bar{t}W\kern-0.2em j_{\mathrm{EW}}}$ process. This process has embedded within it a …
View article: Observation of $t\bar{t}\gamma\gamma$ production at $\sqrt{s}=$13 TeV with the ATLAS detector
Observation of $t\bar{t}\gamma\gamma$ production at $\sqrt{s}=$13 TeV with the ATLAS detector Open
This paper presents the first observation of top-quark pair production in association with two photons ($t\bar{t}\gamma\gamma$). The measurement is performed in the single-lepton decay channel using proton-proton collision data collected b…
View article: The environmental impact, carbon emissions and sustainability of computing in the ATLAS experiment
The environmental impact, carbon emissions and sustainability of computing in the ATLAS experiment Open
ATLAS, a general-purpose experiment at the Large Hadron Collider (LHC), operates a large internationally-distributed computing infrastructure, including over $10^6$ TB of managed data on disk and tape and almost one million simultaneously …
View article: Electroweak diboson production in association with a high-mass dijet system in semileptonic final states from $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
Electroweak diboson production in association with a high-mass dijet system in semileptonic final states from $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector Open
This paper reports the observation of electroweak diboson ($WW/WZ/ZZ$) production in association with a high-mass dijet system, in which final states with one boson decaying leptonically and the other boson decaying hadronically are studie…
View article: Search for single production of vector-like quarks decaying into $W(\ell ν)b$ in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
Search for single production of vector-like quarks decaying into $W(\ell ν)b$ in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector Open
A search for single production of a vector-like quark $Q$, which could be either a singlet $T$, with charge $\tfrac23$, or a $Y$ from a $(T,B,Y)$ triplet, with charge $-\tfrac43$, is performed using data from proton-proton collisions at a …
View article: Search for events with one displaced vertex from long-lived neutral particles decaying into hadronic jets in the ATLAS muon spectrometer in $pp$ collisions at $\sqrt{s}=13$ TeV
Search for events with one displaced vertex from long-lived neutral particles decaying into hadronic jets in the ATLAS muon spectrometer in $pp$ collisions at $\sqrt{s}=13$ TeV Open
A search for events with one displaced vertex from long-lived particles using data collected by the ATLAS detector at the Large Hadron Collider is presented, using 140 fb$^{-1}$ of proton-proton collision data at $\sqrt{s} = 13$ TeV record…
View article: Test of lepton flavour universality in W-boson decays into electrons and τ-leptons using pp collisions at $ \sqrt{s} $ = 13 TeV with the ATLAS detector
Test of lepton flavour universality in W-boson decays into electrons and τ-leptons using pp collisions at $ \sqrt{s} $ = 13 TeV with the ATLAS detector Open
A measurement of the ratio of the branching fractions, R$_{τ/e}$ = B(W → τν)/B(W → eν), is performed using a sample of W bosons originating from top-quark decays to final states containing τ-leptons or electrons. This measurement uses pp c…
View article: Cross-section measurements for the production of a $W$-boson in association with high-transverse-momentum jets in pp collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
Cross-section measurements for the production of a $W$-boson in association with high-transverse-momentum jets in pp collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector Open
A set of measurements for the production of a $W$-boson in association with high-transverse-momentum jets is presented using 140 fb$^{-1}$ of proton–proton collision data at a centre-of-mass energy of $\sqrt{s}=13$ TeV collected by the ATL…
View article: Azimuthal anisotropies of charged particles with high transverse momentum in Pb+Pb collisions at $\sqrt{s_{_\text{NN}}} = 5.02$ TeV with the ATLAS detector
Azimuthal anisotropies of charged particles with high transverse momentum in Pb+Pb collisions at $\sqrt{s_{_\text{NN}}} = 5.02$ TeV with the ATLAS detector Open
A measurement is presented of elliptic ($v_2$) and triangular ($v_3$) azimuthal anisotropy coefficients for charged particles produced in Pb+Pb collisions at $\sqrt{s_{_\text{NN}}} = 5.02$ TeV using a dataset corresponding to an integrated…
View article: Observation of top-quark pair production in lead-lead collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV with the ATLAS detector
Observation of top-quark pair production in lead-lead collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV with the ATLAS detector Open
Top-quark pair production is observed in lead-lead (Pb+Pb) collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV at the Large Hadron Collider with the ATLAS detector. The data sample was recorded in 2015 and 2018, amounting to an integrated lumino…
View article: Expected tracking performance of the ATLAS Inner Tracker at the High-Luminosity LHC
Expected tracking performance of the ATLAS Inner Tracker at the High-Luminosity LHC Open
The high-luminosity phase of LHC operations (HL-LHC), willfeature a large increase in simultaneous proton-proton interactionsper bunch crossing up to 200, compared with a typical levelingtarget of 64 in Run 3. Such an increase will create …
View article: Measurements and interpretations of W$^{±}$Z production cross-sections in pp collisions at $ \sqrt{s}=13 $ TeV with the ATLAS detector
Measurements and interpretations of W$^{±}$Z production cross-sections in pp collisions at $ \sqrt{s}=13 $ TeV with the ATLAS detector Open
Measurements of integrated and differential cross-sections for W$^{±}$Z production in proton-proton collisions are presented. The data collected by the ATLAS detector at the Large Hadron Collider from 2015 to 2018 at a centre-of-mass energ…
View article: Measurement of the properties of Higgs boson production at $\\sqrt{s}$ = 13 TeV in the <em>H → γγ</em> channel using 139 fb<sup>-1</sup> of <em>pp</em> collision data with the ATLAS experiment
Measurement of the properties of Higgs boson production at $\\sqrt{s}$ = 13 TeV in the <em>H → γγ</em> channel using 139 fb<sup>-1</sup> of <em>pp</em> collision data with the ATLAS experiment Open
Measurements of Higgs boson production cross-sections are carried out in the diphoton decay channel using 139 fb-1 of pp collision data at $\\sqrt{s}$ = 13 TeV collected by the ATLAS experiment at the LHC. The analysis is based …