James Richard Catmore

• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,932 contributors for this article] (2026). Search for signatures of electroweakinos with photons, jets, and large missing transverse momentum in √s=13 TeV pp collisions with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2026(4). doi: 10.1007/JHEP04(2026)150. Full text in Research Archive Show summary

  A search for final states characterised by at least one isolated high transversemomentum photon, jets and large missing transverse momentum is presented. Such a final state might occur in gauge-mediated supersymmetric models where a pair of binos and higgsinos mix to form neutralinos, one of which decays into a photon plus a gravitino while the other decays into a Higgs boson, a Z boson or a photon, plus a gravitino. The search is performed using the full Run-2 data sample of 140 fb−1 of √s = 13TeV proton-proton collisions collected by the ATLAS detector at the Large Hadron Collider. No significant excess of events is observed above the Standard Model prediction and model-dependent exclusion limits at the 95% confidence level are set. These limits are interpreted in terms of the masses of gauginos, which are excluded up to 1.2TeV depending on their branching ratios, and on their branching ratios as a function of their mass.

• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,942 contributors for this article] (2026). Search for the Higgs boson decay to a Z boson and a photon in pp collisions at s=13 TeV and 13.6 TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 876. doi: 10.1016/j.physletb.2026.140313. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,934 contributors for this article] (2026). Measurement of the top-quark mass using decays with a J/ψ meson at √s=13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2026(4). doi: 10.1007/JHEP04(2026)099. Full text in Research Archive Show summary

  The top-quark mass is measured using top-quark decays producing an isolated lepton and J/ψ meson reconstructed in its μ+μ− decay mode. The data sample was recorded with the ATLAS detector in proton-proton collisions at a centre-of-mass energy of √s = 13TeV during Run 2 of the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb−1. The measurement is based on the invariant mass m(ℓμ+μ−) of the system made of the isolated lepton ℓ from the W boson decay and the non-isolated μ+μ− pair from a J/ψ decay of a b-hadron, exploiting its sensitivity to the top-quark mass. An unbinned maximumlikelihood fit to the m(ℓμ+μ−) distribution is performed to extract the top-quark mass. The top-quark mass is measured to be mtop = 172.17±0.80 (stat)±0.81 (syst)±1.07 (recoil) GeV, with a total uncertainty of 1.56 GeV. The third uncertainty arises from changing the dipole parton shower gluon-recoil scheme used in top-quark decays.

• Zwalinski, L.; Zormpa, O.; Zorbas, T. G.; Zografos, A.; Zoch, K. & Zoccoli, A. [Show all 2,915 contributors for this article] (2026). Electroweak diboson production in association with a high-mass dijet system in semileptonic final states from pp collisions at √s=13 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 86(4). doi: 10.1140/epjc/s10052-025-15217-3. Full text in Research Archive Show summary

  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 studied. The hadronically decaying W/Z boson is reconstructed as either two small-radius jets or one large-radius jet with jet substructure requirements. The data analyzed correspond to an integrated luminosity of 140 fb−1 of proton–proton collisions at a center-of-mass energy of √s = 13 TeV collected with the ATLAS detector during the 2015-2018 data taking at the Large Hadron Collider. The electroweak production of WW/WZ/ZZ in association with two jets is observed in a phase space dominated by vector-boson scattering with a significance of 7.4σ (expected 6.1σ) and the signal strength is determined to be 1.28+0.23 −0.21. The corresponding production cross section in a fiducial phase space is measured in addition. The signal strengths of both electroweak and QCD associated diboson productions are furthermore measured in a two-dimensional fit, the result of which agrees with the Standard Model prediction. The data are interpreted in the context of a dimension-8 effective field theory to probe anomalous quartic gauge couplings resulting in the first set of exclusion limits on the Wilson coefficients in the semileptonic channel reported by the ATLAS Collaboration. The observed limits for the S02, T0 and M0 operators are (−3.96 < fS02/4 < 3.96) TeV−4, (−0.25 < fT 0/4 < 0.22) TeV−4, (−1.26 < fM0/4 < 1.25) TeV−4.

• Zwalinski, L.; Zormpa, O.; Zorbas, T. G.; Zografos, A.; Zoch, K. & Zoccoli, A. [Show all 2,928 contributors for this article] (2026). Measurement of the W-boson angular coefficients and transverse momentum in pp collisions at √s=13 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 86(5). doi: 10.1140/epjc/s10052-025-15264-w. Full text in Research Archive Show summary

  The angular distributions of Drell–Yan lepton pairs provide sensitive probes of the underlying dynamics of quantum chromodynamics (QCD) effects in vector-boson production. This paper presents for the first time the measurement of the full set of angular coefficients together with the differential cross-section as a function of the transverse momentum of the W boson, in the full phase space of the decay leptons. The measurements are performed separately for the W− and W+ channels. The analysis uses proton– proton collision data recorded by the ATLAS experiment at the Large Hadron Collider in 2017 and 2018, during special low-luminosity runs with a reduced number of interactions per bunch crossings (pile-up). The data correspond to an integrated luminosity of 338 pb−1 at a centre-of-mass energy of √s = 13 TeV. The low pile-up environment provides excellent experimental conditions for high-precision measurements ofW-boson production. All results agree with theoretical predictions incorporating finite-order QCD corrections up to order α2S.

• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,861 contributors for this article] (2026). Combination of Measurements of CP Properties of Higgs Boson Interactions with Vector Bosons Using Proton-Proton Collisions at sqrt[s]=13  TeV with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 137(2), p. 021801–021801. doi: 10.1103/54vv-lgc7. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,850 contributors for this article] (2026). Search for long-lived charginos and τ-sleptons using final states with a disappearing track in pp collisions at √s=13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2026(7). doi: 10.1007/JHEP07(2026)152. Full text in Research Archive Show summary

  This paper reports a search for decays of long-lived charginos or τ-sleptons to final states containing a short disappearing track, a single high-energy jet, and missing transverse momentum. The search uses 137 fb−1 of data from 13 TeV proton–proton collisions recorded by the ATLAS detector during Run 2 of the LHC. Multiple search regions are defined, all requiring the presence of a track reconstructed from either three or four measurements in the innermost layers of the ATLAS detector. Regions with tracks having only three measurements are further characterised by the absence or presence of a low-energy charged pion reconstructed using a dedicated algorithm, leveraging machine learning. Data-driven methods are used to estimate the background contributions in the search regions. No significant excesses are found and 95% CL lower limits are placed on the masses of charginos and τ-sleptons in the lifetime range 0.01–10 ns. Observed (expected) mass limits of up to 225 GeV (250 GeV) are set for pure-higgsino charginos in scenarios with lifetimes below 0.03 ns, where the electroweakino mass splitting is entirely due to loop corrections involving the Standard Model bosons, and up to 720 GeV (840 GeV) for charginos with a lifetime of around 1 ns. For wino production, charginos with masses up to 880 GeV (1020 GeV) are excluded for lifetimes of around 1 ns. For τ-sleptons with lifetimes of around 1 ns, masses are excluded up to 320 GeV (390 GeV) in Constrained Minimal Supersymmetric Standard Model scenarios and 300 GeV (380 GeV) in Gauge-Mediated Supersymmetry-Breaking scenarios.

• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,862 contributors for this article] (2026). Missing-mass search in forward-proton-tagged dilepton events with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2026(7). doi: 10.1007/JHEP07(2026)236. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,863 contributors for this article] (2026). Evidence of Higgs Boson Inclusive Production at High Transverse Momentum Decaying to a Pair of b-Quarks with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 137(7), p. 071801–071801. doi: 10.1103/vbxg-71c2. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,934 contributors for this article] (2026). Constraints on effective field theories via quadruple-differential angular decay rates from t-channel single-top-quark production at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2026(7). doi: 10.1007/JHEP07(2026)107. Full text in Research Archive
• Zwalinski, L.; Zorbas, T. G.; Zografos, A.; Zoch, K.; Zoccoli, A. & Živković, L. [Show all 2,855 contributors for this article] (2026). Breaking barriers: the impact of ATLAS Virtual Visits in science communication. The European Physical Journal Plus. 141(7). doi: 10.1140/epjp/s13360-026-07771-w. Full text in Research Archive Show summary

  The ATLAS Collaboration at CERN’s Large Hadron Collider is at the forefront of particle physics research and is equally committed to bridging the gap between cutting-edge science and the wider public. Since 2010, the ATLAS Virtual Visits programme has provided live, interactive tours of the ATLAS detector and control room to global audiences in their language, without the need to travel. The programme has grown significantly since its inception, as demonstrated by quantitative data collected since January 2019 and case studies of large-scale implementations in Brazil and Greece. The impact on individual participants is also discussed.

• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,865 contributors for this article] (2026). Study of particle fluence effects on collected charge and depletion voltage of the ATLAS IBL planar pixel sensors. Journal of Instrumentation (JINST). 21(7). doi: 10.1088/1748-0221/21/07/P07048. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,860 contributors for this article] (2026). Effective field theory interpretation of ATLAS measurements involving the Higgs boson, electroweak bosons and the top quark. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2026(7). doi: 10.1007/JHEP07(2026)238. Full text in Research Archive
• Zwalinski, L.; Zormpa, O.; Zorbas, T. G.; Zografos, A.; Zoch, K. & Zoccoli, A. [Show all 2,853 contributors for this article] (2026). Calibration of the jet energy scale and resolution of small-radius jets using semileptonic tt¯ events with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 86(8). doi: 10.1140/epjc/s10052-026-15692-2. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,927 contributors for this article] (2026). Search for electroweak tt̄Wj production in multileptonic final states at (Formula presented) = 13 TeV with the ATLAS detector and bounds on effective field theory operators. Physical Review D. ISSN 2470-0010. 114(1). doi: 10.1103/P5NZ-95M3. Full text in Research Archive
• Ciangottini, D.; Forti, A. C.; Heinrich, L.; Skidmore, N.; Alpigiani, C. & Aly, M. [Show all 66 contributors for this article] (2025). Analysis Facilities for the HL-LHC White Paper. Computing and Software for Big Science. ISSN 2510-2036. 9(1). doi: 10.1007/s41781-025-00133-8. Full text in Research Archive Show summary

  This white paper presents the current status of the R&D for Analysis Facilities (AFs) and attempts to summarize the views on the future direction of these facilities. These views have been collected through the High Energy Physics (HEP) Software Foundation’s (HSF) Analysis Facilities forum (HSF Analysis Facilities Forum), established in March 2022, the Analysis Ecosystems II workshop (Analysis Ecosystems Workshop II), that took place in May 2022, and the WLCG/HSF pre-CHEP workshop (WLCG–HSF pre-CHEP Workshop), that took place in May 2023. The paper attempts to cover all the aspects of an analysis facility.

• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,863 contributors for this article] (2025). Measurement of off-shell Higgs boson production in the H∗ → ZZ → 4ℓ decay channel using a neural simulation-based inference technique in 13 TeV pp collisions with the ATLAS detector. Reports on progress in physics (Print). ISSN 0034-4885. 88(5). doi: 10.1088/1361-6633/adcd9a. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,905 contributors for this article] (2025). Measurement of double-differential charged-current Drell-Yan cross-sections at high transverse masses in pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2025(7). doi: 10.1007/JHEP07(2025)026. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,916 contributors for this article] (2025). Observation of double parton scattering in same-sign W boson pair production in pp collisions at s=13 TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 870. doi: 10.1016/j.physletb.2025.139892. Full text in Research Archive Show summary

  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 center-of-mass energy of 13 TeV, collected during Run 2 of the Large Hadron Collider. The study is performed in final states including two same-charge leptons, electron or muon, missing transverse momentum, and up to one jet. An excess of events is observed over the expected background contributions with a significance of 8.8 standard deviations. The measured fiducial cross section times leptonic branching fraction is 4.59 ± 0.64 fb. The measurement corresponds to a double parton scattering effective cross section of 10.6 ± 1.8 mb.

• Aad, G.; Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S. & Abeling, K. [Show all 2,924 contributors for this article] (2025). Search for electroweak-scale dijet resonances using trigger-level analysis with the ATLAS detector in 132 fb− 1 of pp collisions at √s = 13 TeV. Physical Review D. ISSN 2470-0010. 112(9). doi: 10.1103/15p2-bkg8. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 51 contributors for this article] (2025). Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in pp collisions at √s = 13 Te V with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. doi: 10.1140/epjc/s10052-025-13916-5. Full text in Research Archive Show summary

  A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb - 1 of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13  Te V . Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95% confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001% and 5%, depending on the assumed dark photon mass and signal model.

• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 50 contributors for this article] (2025). Measurement of the Lund jet plane in hadronic decays of top quarks and W bosons with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 85. doi: 10.1140/epjc/s10052-025-13924-5. Full text in Research Archive Show summary

  The Lund jet plane (LJP) is measured for the first time in t t ¯ events, using 140  fb - 1 of s = 13  TeV pp collision data collected with the ATLAS detector at the LHC. The LJP is a two-dimensional observable of the sub-structure of hadronic jets that acts as a proxy for the kinematics of parton showers and hadron formation. The observable is constructed from charged particles and is measured for R = 1.0 anti- k t jets with transverse momentum above 350 GeV containing the full decay products of either a top quark or a daughter W boson. The other top quark in the event is identified from its decay into a b-quark, an electron or a muon and a neutrino. The measurement is corrected for detector effects and compared with a range of Monte Carlo predictions sensitive to different aspects of the hadronic decays of the heavy particles. In the W-boson-initiated jets, all the predictions are incompatible with the measurement. In the top quark initiated jets, disagreement with all predictions is observed in smaller subregions of the plane, and with a subset of the predictions across the fiducial plane. The measurement could be used to improve the tuning of Monte Carlo generators, for better modelling of hadronic decays of heavy quarks and bosons, or to improve the performance of jet taggers.

• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,914 contributors for this article] (2025). Search for decays of the Higgs boson into scalar particles decaying into four or six b quarks using pp collisions at (Formula presented) = 13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 112(7). doi: 10.1103/mzld-ldlt. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,935 contributors for this article] (2025). Measurement of the top-quark pole mass in dileptonic tt¯ + 1-jet events at s=13 TeV with the ATLAS experiment. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2025(12). doi: 10.1007/JHEP12(2025)023. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,914 contributors for this article] (2025). Search for single production of vector-like quarks decaying into W (ℓν)b in pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2025(12). doi: 10.1007/JHEP12(2025)012. Full text in Research Archive
• Zwalinski, L.; Zormpa, O.; Zorbas, T. G.; Zografos, A.; Zoch, K. & Zoccoli, A. [Show all 2,938 contributors for this article] (2025). The environmental impact, carbon emissions and sustainability of computing in the ATLAS experiment. European Physical Journal C. ISSN 1434-6044. 85(12). doi: 10.1140/epjc/s10052-025-14976-3. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 2,889 contributors for this article] (2025). Search for single-production of vector-like quarks decaying into Wb in the fully hadronic final state in pp collisions at s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2025(2). doi: 10.1007/JHEP02(2025)075. Full text in Research Archive
• Fewell, M.P.; Gallagher, J.; Grant, C.M.; Green, M.J.; Jackson, P. & Kong, A.X.Y. [Show all 2,826 contributors for this article] (2025). Search for triple Higgs boson production in the 6𝑏 final state using 𝑝𝑝 collisions at √𝑠 =13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 111(3). doi: 10.1103/PhysRevD.111.032006. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,919 contributors for this article] (2025). Search for Higgs boson decays into a Z boson and a light hadronically decaying resonance in pp collisions at √𝑠=13 TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 868. doi: 10.1016/j.physletb.2025.139671. Full text in Research Archive
• Zwalinski, L.; Zou, W.; Zormpa, O.; Zorbas, T.G.; Zoch, K. & Zoccoli, A. [Show all 2,930 contributors for this article] (2025). Search for a light charged Higgs boson in t→H±b decays, with H±→cs, in pp collisions at √s=13TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 85(2). doi: 10.1140/epjc/s10052-024-13715-4. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,872 contributors for this article] (2025). Measurement of top-quark pair production in association with charm quarks in proton–proton collisions at √𝑠 = 13 TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 860. doi: 10.1016/j.physletb.2024.139177. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,884 contributors for this article] (2025). Combination of searches for singly and doubly charged Higgs bosons produced via vector-boson fusion in proton–proton collisions at s=13 TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 860. doi: 10.1016/j.physletb.2024.139137. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,938 contributors for this article] (2025). Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 861. doi: 10.1016/j.physletb.2025.139277. Full text in Research Archive Show summary

  This Letter presents a constraint on the total width of the Higgs boson (TH) using a combined measurement of on-shell Higgs boson production and the production of four top quarks, which involves contributions from off-shell Higgs boson-mediated processes. This method relies on the assumption that the tree-level Higgs-top Yukawa coupling strength is the same for on-shell and off-shell Higgs boson production processes, thereby avoiding any assumptions about the relationship between on-shell and off-shell gluon fusion Higgs production rates, which were central to previous measurements. The result is based on up to 140 fb−1 of proton–proton collisions at a centre-of-mass energy of √8 = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on TH is 450 MeV (75 MeV). Additionally, considering the constraint on the Higgs-top Yukawa coupling from loop-induced Higgs boson production and decay processes further yields an observed (expected) upper limit of 160 MeV (55 MeV).

• Gallagher, J.; Grant, C.M.; Green, M.J.; Jackson, P.; Kong, A.X.Y. & Pandya, H.D. [Show all 2,884 contributors for this article] (2025). Combination of searches for singly produced vectorlike top quarks in (Formula presented) collisions at (Formula presented) with the ATLAS detector. Physical Review D. ISSN 2470-0010. 111(1). doi: 10.1103/PhysRevD.111.012012. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,917 contributors for this article] (2025). Search for Magnetic Monopole Pair Production in Ultraperipheral Pb+Pb Collisions at √𝑠NN=5.36 TeV with the ATLAS Detector at the LHC. Physical Review Letters. ISSN 0031-9007. 134(6), p. 061803-1–061803-24. doi: 10.1103/PhysRevLett.134.061803. Full text in Research Archive
• Zwalinski, L.; Zou, W.; Zormpa, O.; Zorbas, T.G.; Zoch, K. & Zoccoli, A. [Show all 2,978 contributors for this article] (2025). Software and computing for Run 3 of the ATLAS experiment at the LHC. European Physical Journal C. ISSN 1434-6044. 85(3). doi: 10.1140/epjc/s10052-024-13701-w. Full text in Research Archive Show summary

  The ATLAS experiment has developed extensive software and distributed computing systems for Run 3 of the LHC. These systems are described in detail, including software infrastructure and workflows, distributed data and workload management, database infrastructure, and validation. The use of these systems to prepare the data for physics analysis and assess its quality are described, along with the software tools used for data analysis itself. An outlook for the development of these projects towards Run 4 is also provided.

• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,919 contributors for this article] (2025). Search for Dark Matter Produced in Association with a Dark Higgs Boson in the bb¯ Final State Using pp Collisions at Vs=13  TeV with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 134(12). doi: 10.1103/PhysRevLett.134.121801. Full text in Research Archive
• Gallagher, J.; Grant, C.M.; Green, M.J.; Jackson, P.; Kong, A.X.Y. & Pandya, H.D. [Show all 2,894 contributors for this article] (2025). Measurement of photonuclear jet production in ultraperipheral (Formula presented) collisions at (Formula presented) with the ATLAS detector. Physical Review D. ISSN 2470-0010. 111(5). doi: 10.1103/PhysRevD.111.052006. Full text in Research Archive
• Aad, G.; Abbott, B.; Abbott, D.C.; Abud, Abud Abed; Abeling, K. & Abhayasinghe, D.K. [Show all 2,965 contributors for this article] (2025). Expected tracking performance of the ATLAS Inner Tracker at the High-Luminosity LHC. Journal of Instrumentation (JINST). 20(2). doi: 10.1088/1748-0221/20/02/P02018. Full text in Research Archive
• Aad, G.; Abbott, B.; Abdallah, J.; Abeling, K.; Abicht, N. J. & Abidi, S. H. [Show all 49 contributors for this article] (2024). Operation and performance of the ATLAS tile calorimeter in LHC Run 2. European Physical Journal C. ISSN 1434-6044. doi: 10.1140/epjc/s10052-024-13151-4. Full text in Research Archive Show summary

  The ATLAS tile calorimeter (TileCal) is the hadronic sampling calorimeter covering the central region of the ATLAS detector at the Large Hadron Collider (LHC). This paper gives an overview of the calorimeter’s operation and performance during the years 2015–2018 (Run 2). In this period, ATLAS collected proton–proton collision data at a centre-of-mass energy of 13 TeV and the TileCal was 99.65% efficient for data-taking. The signal reconstruction, the calibration procedures, and the detector operational status are presented. The performance of two ATLAS trigger systems making use of TileCal information, the minimum-bias trigger scintillators and the tile muon trigger, is discussed. Studies of radiation effects allow the degradation of the output signals at the end of the LHC and HL-LHC operations to be estimated. Finally, the TileCal response to isolated muons, hadrons and jets from proton–proton collisions is presented. The energy and time calibration methods performed excellently, resulting in good stability and uniformity of the calorimeter response during Run 2. The setting of the energy scale was performed with an uncertainty of 2%. The results demonstrate that the performance is in accordance with specifications defined in the Technical Design Report.

• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N. J. [Show all 50 contributors for this article] (2024). Underlying-event studies with strange hadrons in pp collisions at √s = 13 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. doi: 10.1140/epjc/s10052-024-13243-1. Full text in Research Archive Show summary

  Properties of the underlying-event in pp interactions are investigated primarily via the strange hadrons K S 0 , Λ and Λ ¯ , as reconstructed using the ATLAS detector at the LHC in minimum-bias pp collision data at s = 13 TeV. The hadrons are reconstructed via the identification of the displaced two-particle vertices corresponding to the decay modes , Λ → π - p and Λ ¯ → π + p ¯ . These are used in the construction of underlying-event observables in azimuthal regions computed relative to the leading charged-particle jet in the event. None of the hadronisation and underlying-event physics models considered can describe the data over the full kinematic range considered. Events with a leading charged-particle jet in the range of 10 < p T ≤ 40 GeV are studied using the number of prompt charged particles in the transverse region. The ratio N ( Λ + Λ ¯ ) / N ( K S 0 ) as a function of the number of such charged particles varies only slightly over this range. This disagrees with the expectations of some of the considered Monte Carlo models.

• Filmer, E.K.; Gallagher, J.; Grant, C.M.; Green, M.J.; Jackson, P. & Kong, A.X.Y. [Show all 2,887 contributors for this article] (2024). Jet radius dependence of dijet momentum balance and suppression in Pb + Pb collisions at 5.02 TeV with the ATLAS detector. Physical Review C. ISSN 2469-9985. 110(5). doi: 10.1103/PhysRevC.110.054912. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,850 contributors for this article] (2024). Observation of tt¯ production in the lepton+jets and dilepton channels in p+Pb collisions at sNN = 8.16 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2024(11). doi: 10.1007/JHEP11(2024)101. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,902 contributors for this article] (2024). ATLAS Run 2 searches for electroweak production of supersymmetric particles interpreted within the pMSSM. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2024(5). doi: 10.1007/JHEP05(2024)106. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abeling, K.; Abicht, N.J. & Abidi, S.H. [Show all 2,842 contributors for this article] (2024). Measurement of the VH,H → ττ process with the ATLAS detector at 13 TeV. Physics Letters B. ISSN 0370-2693. 855. doi: 10.1016/j.physletb.2024.138817. Full text in Research Archive
• Filmer, E.K.; Grant, C.M.; Jackson, P.; Kong, A.X.Y.; Pandya, H.D. & Potti, H. [Show all 2,864 contributors for this article] (2024). Search for low-mass resonances decaying into two jets and produced in association with a photon or a jet at Formula Presented with the ATLAS detector. Physical Review D. ISSN 2470-0010. doi: 10.1103/PhysRevD.110.032002. Full text in Research Archive
• Filmer, E.K.; Gallagher, J.; Grant, C.M.; Green, M.J.; Jackson, P. & Kong, A.X.Y. [Show all 2,869 contributors for this article] (2024). Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into b¯bτ+τ− using pp collisions at s=13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 110(5). doi: 10.1103/PhysRevD.110.052013. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,944 contributors for this article] (2024). Measurement of the production cross-section of J/ψ and ψ(2S) mesons in pp collisions at s=13 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 84(2). doi: 10.1140/epjc/s10052-024-12439-9. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,770 contributors for this article] (2024). Performance and calibration of quark/gluon-jet taggers using 140 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector. Chinese Physics C. ISSN 1674-1137. 48(2). doi: 10.1088/1674-1137/acf701. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,886 contributors for this article] (2024). Measurement of ZZ production cross-sections in the four-lepton final state in pp collisions at s=13.6TeV with the ATLAS experiment. Physics Letters B. ISSN 0370-2693. 855. doi: 10.1016/j.physletb.2024.138764. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,916 contributors for this article] (2024). Constraints on simplified dark matter models involving an s-channel mediator with the ATLAS detector in pp collisions at s=13 TeV. European Physical Journal C. ISSN 1434-6044. 84(10). doi: 10.1140/epjc/s10052-024-13215-5. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,883 contributors for this article] (2024). Sensor response and radiation damage effects for 3D pixels in the ATLAS IBL Detector. Journal of Instrumentation (JINST). 19(10). doi: 10.1088/1748-0221/19/10/P10008. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,930 contributors for this article] (2024). Precise measurements of W- and Z-boson transverse momentum spectra with the ATLAS detector using pp collisions at s=5.02 TeV and 13 TeV. European Physical Journal C. ISSN 1434-6044. 84(10). doi: 10.1140/epjc/s10052-024-13414-0. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,904 contributors for this article] (2024). Interpretations of the ATLAS measurements of Higgs boson production and decay rates and differential cross-sections in pp collisions at s = 13 TeV. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2024(11). doi: 10.1007/JHEP11(2024)097. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abeling, K.; Abicht, N.J. & Abidi, S.H. [Show all 2,827 contributors for this article] (2024). Combination of searches for pair-produced leptoquarks at s=13 TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 854. doi: 10.1016/j.physletb.2024.138736. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abeling, K.; Abicht, N.J. & Abidi, S.H. [Show all 2,912 contributors for this article] (2024). Search for flavour-changing neutral-current couplings between the top quark and the Higgs boson in multi-lepton final states in 13 TeV pp collisions with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 84(7). doi: 10.1140/epjc/s10052-024-12994-1. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,865 contributors for this article] (2024). ATLAS searches for additional scalars and exotic Higgs boson decays with the LHC Run 2 dataset. Physics reports. ISSN 0370-1573. doi: 10.1016/j.physrep.2024.09.002. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,889 contributors for this article] (2024). Determination of the Relative Sign of the Higgs Boson Couplings to W and Z Bosons Using WH Production via Vector-Boson Fusion with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 133(14). doi: 10.1103/PhysRevLett.133.141801. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,843 contributors for this article] (2024). Search for pair-production of vector-like quarks in lepton+jets final states containing at least one b-tagged jet using the Run 2 data from the ATLAS experiment. Physics Letters B. ISSN 0370-2693. 854. doi: 10.1016/j.physletb.2024.138743. Full text in Research Archive
• Filmer, E.K.; Grant, C.M.; Green, M.J.; Jackson, P.; Kong, A.X.Y. & Pandya, H.D. [Show all 2,868 contributors for this article] (2024). Simultaneous Unbinned Differential Cross-Section Measurement of Twenty-Four Z + jets Kinematic Observables with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 133(26). doi: 10.1103/PhysRevLett.133.261803. Full text in Research Archive
• Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,931 contributors for this article] (2024). Study of Z→llγ decays at s = 8 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 84(2). doi: 10.1140/epjc/s10052-024-12471-9. Full text in Research Archive Show summary

  This paper presents a study of Z → llγ decays with the ATLAS detector at the Large Hadron Collider. The analysis uses a proton–proton data sample corresponding to an integrated luminosity of 20.2 fb−1 collected at a centre-of mass energy √s = 8 TeV. Integrated fiducial cross-sections together with normalised differential fiducial cross-sections, sensitive to the kinematics of final-state QED radiation, are obtained. The results are found to be in agreement with state-of-the-art predictions for final-state QED radiation. First measurements of Z →llγγ decays are also reported.

• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abeling, K.; Abicht, N.J. & Abidi, S.H. [Show all 2,858 contributors for this article] (2024). Combination of searches for heavy spin-1 resonances using 139 fb⁻¹ of proton-proton collision data at s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2024(4). doi: 10.1007/JHEP04(2024)118. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,934 contributors for this article] (2024). Measurement of the H → γγ and H → ZZ∗ → 4 ℓ cross-sections in pp collisions at √s=13.6 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 84(1). doi: 10.1140/epjc/s10052-023-12130-5. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,941 contributors for this article] (2024). Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a Z boson in the ℓ+ℓ−tt¯ and νν¯bb¯ final states using 140 fb⁻¹ of data collected with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2024(2). doi: 10.1007/JHEP02(2024)197. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,880 contributors for this article] (2024). Search for non-resonant production of semi-visible jets using Run 2 data in ATLAS. Physics Letters B. ISSN 0370-2693. 848. doi: 10.1016/j.physletb.2023.138324. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,948 contributors for this article] (2024). Search for short- and long-lived axion-like particles in H→aa→4γ decays with the ATLAS experiment at the LHC. European Physical Journal C. ISSN 1434-6044. 84(7). doi: 10.1140/epjc/s10052-024-12979-0. Full text in Research Archive
• Zwalinski, L.; Zou, W.; Zormpa, O.; Zorbas, T.G.; Zoch, K. & Zoccoli, A. [Show all 2,941 contributors for this article] (2024). Improving topological cluster reconstruction using calorimeter cell timing in ATLAS. European Physical Journal C. ISSN 1434-6044. 84(5). doi: 10.1140/epjc/s10052-024-12657-1. Full text in Research Archive
• Amerl, M.; Filmer, E.K.; Jackson, P.; Kong, A.X.Y.; Potti, H. & Ruggeri, T.A. [Show all 3,429 contributors for this article] (2024). The ATLAS experiment at the CERN Large Hadron Collider: a description of the detector configuration for Run 3. Journal of Instrumentation (JINST). 19(5). doi: 10.1088/1748-0221/19/05/P05063. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abbott, D.C.; Abud, Abud Abed & Abeling, K. [Show all 2,958 contributors for this article] (2024). Search for pair-produced vectorlike quarks coupling to light quarks in the lepton plus jets final state using 13 TeV pp collisions with the ATLAS detector. Physical Review D. ISSN 2470-0010. 110(5). doi: 10.1103/PhysRevD.110.052009. Full text in Research Archive
• Filmer, E.K.; Grant, C.M.; Jackson, P.; Kong, A.X.Y.; Pandya, H.D. & Potti, H. [Show all 2,905 contributors for this article] (2024). Search for the Exclusive W → πγ, W → Kγ and W → ργ with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 133(16). doi: 10.1103/PhysRevLett.133.161804. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,908 contributors for this article] (2024). Simultaneous energy and mass calibration of large-radius jets with the ATLAS detector using a deep neural network. Machine Learning: Science and Technology. 5(3). doi: 10.1088/2632-2153/ad611e. Full text in Research Archive
• Zwalinski, L.; Zou, W.; Zormpa, O.; Zorbas, T.G.; Zoch, K. & Zoccoli, A. [Show all 2,917 contributors for this article] (2024). Fiducial and differential cross-section measurements of electroweak Wγjj production in pp collisions at s=13 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 84(10). doi: 10.1140/epjc/s10052-024-13311-6. Full text in Research Archive Show summary

  The observation of the electroweak production of a W boson and a photon in association with two jets, using pp collision data at the Large Hadron Collider at a centre of mass energy of s = 13  TeV, is reported. The data were recorded by the ATLAS experiment from 2015 to 2018 and correspond to an integrated luminosity of 140 fb - 1 . This process is sensitive to the quartic gauge boson couplings via the vector boson scattering mechanism and provides a stringent test of the electroweak sector of the Standard Model. Events are selected if they contain one electron or muon, missing transverse momentum, at least one photon, and two jets. Multivariate techniques are used to distinguish the electroweak W γ j j process from irreducible background processes. The observed significance of the electroweak W γ j j process is well above six standard deviations, compared to an expected significance of 6.3 standard deviations. Fiducial and differential cross sections are measured in a fiducial phase space close to the detector acceptance, which are in reasonable agreement with leading order Standard Model predictions from MadGraph5+Pythia8 and Sherpa. The results are used to constrain new physics effects in the context of an effective field theory.

• Filmer, E.K.; Grant, C.M.; Green, M.J.; Jackson, P.; Kong, A.X.Y. & Pandya, H.D. [Show all 2,868 contributors for this article] (2024). Calibration of a soft secondary vertex tagger using proton-proton collisions at s = 13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 110(3). doi: 10.1103/PhysRevD.110.032015. Full text in Research Archive
• Filmer, E.K.; Grant, C.M.; Jackson, P.; Kong, A.X.Y.; Pandya, H.D. & Potti, H. [Show all 2,863 contributors for this article] (2024). Search for charged-lepton-flavor violating 𝜇⁢𝜏⁢𝑞⁢𝑡 interactions in top-quark production and decay in 𝑝⁢𝑝 collisions at √𝑠=13  TeV with the ATLAS detector at the LHC. Physical Review D. ISSN 2470-0010. 110(1). doi: 10.1103/PhysRevD.110.012014. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,947 contributors for this article] (2024). Measurement of the Centrality Dependence of the Dijet Yield in p+Pb Collisions at sqrt[s_{NN}]=8.16  TeV with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 132(10), p. 102301–102301. doi: 10.1103/PhysRevLett.132.102301. Full text in Research Archive Show summary

  ATLAS measured the centrality dependence of the dijet yield using 165  nb−1 of 𝑝+Pb data collected at √𝑠NN =8.16  TeV in 2016. The event centrality, which reflects the 𝑝 +Pb impact parameter, is characterized by the total transverse energy registered in the Pb-going side of the forward calorimeter. The central-to-peripheral ratio of the scaled dijet yields, 𝑅CP, is evaluated, and the results are presented as a function of variables that reflect the kinematics of the initial hard parton scattering process. The 𝑅CP shows a scaling with the Bjorken 𝑥 of the parton originating from the proton, 𝑥𝑝, while no such trend is observed as a function of 𝑥Pb. This analysis provides unique input to understanding the role of small proton spatial configurations in 𝑝 +Pb collisions by covering parton momentum fractions from the valence region down to 𝑥𝑝 ∼10−3 and 𝑥Pb ∼4 ×10−4.

• Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,863 contributors for this article] (2024). Probing the CP nature of the top–Higgs Yukawa coupling in tt¯H and tH events with H→bb¯ decays using the ATLAS detector at the LHC. Physics Letters B. ISSN 0370-2693. 849. doi: 10.1016/j.physletb.2024.138469. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,899 contributors for this article] (2024). Precise test of lepton flavour universality in W-boson decays into muons and electrons in pp collisions at s=13TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 84(10). doi: 10.1140/epjc/s10052-024-13070-4. Full text in Research Archive
• Filmer, E.K.; Grant, C.M.; Jackson, P.; Kong, A.X.Y.; Pandya, H.D. & Potti, H. [Show all 2,839 contributors for this article] (2024). Search for the nonresonant production of Higgs boson pairs via gluon fusion and vector-boson fusion in the Formula Presented final state in proton-proton collisions at Formula Presented with the ATLAS detector. Physical Review D. ISSN 2470-0010. 110(3). doi: 10.1103/PhysRevD.110.032012. Full text in Research Archive
• Filmer, E.K.; Grant, C.M.; Jackson, P.; Kong, A.X.Y.; Pandya, H.D. & Potti, H. [Show all 2,903 contributors for this article] (2024). Statistical Combination of ATLAS Run 2 Searches for Charginos and Neutralinos at the LHC. Physical Review Letters. ISSN 0031-9007. 133(3). doi: 10.1103/PhysRevLett.133.031802. Full text in Research Archive
• Aad, G.; Abbott, B.; Abbott, D.C.; Abud, Abud Abed; Abeling, K. & Abhayasinghe, D.K. [Show all 2,907 contributors for this article] (2024). Search for quantum black hole production in lepton + jet final states using proton-proton collisions at vs = 13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 109(3). doi: 10.1103/PhysRevD.109.032010. Full text in Research Archive Show summary

  A search for quantum black holes in electron+jet and muon+jet invariant mass spectra is performed with 140  fb−1 of data collected by the ATLAS detector in proton-proton collisions at √𝑠 =13  TeV at the Large Hadron Collider. The observed invariant mass spectrum of lepton+jet pairs is consistent with Standard Model expectations. Upper limits are set at 95% confidence level on the production cross section times branching fractions for quantum black holes decaying into a lepton and a quark in a search region with invariant mass above 2.0 TeV. The resulting quantum black hole lower mass threshold limit is 9.2 TeV in the Arkani-Hamed-Dimopoulos-Dvali model, and 6.8 TeV in the Randall-Sundrum model.

• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,902 contributors for this article] (2024). Measurement of the Z boson invisible width at s=13 TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 854. doi: 10.1016/j.physletb.2024.138705. Full text in Research Archive
• Filmer, E.K.; Grant, C.M.; Jackson, P.; Kong, A.X.Y.; Pandya, H.D. & Potti, H. [Show all 2,900 contributors for this article] (2024). Azimuthal Angle Correlations of Muons Produced via Heavy-Flavor Decays in 5.02 TeV Pb+Pb and pp Collisions with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 132(20). doi: 10.1103/PhysRevLett.132.202301. Full text in Research Archive
• Aad, G.; Abbott, B.; Abbott, D.C.; Abeling, K.; Abidi, S.H. & Aboulhorma, A. [Show all 2,929 contributors for this article] (2024). Search for leptoquark pair production decaying into te-t¯e+ or tμ-t¯μ+ in multi-lepton final states in pp collisions at s=13TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 84(8). doi: 10.1140/epjc/s10052-024-12975-4. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abeling, K.; Abicht, N.J. & Abidi, S.H. [Show all 2,887 contributors for this article] (2024). Search for a new Z′ gauge boson via the pp →W^{± (*)} →z′μ^±ν →μ^∓μ μ^±ν process in pp collisions at vs =13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 110(7). doi: 10.1103/PhysRevD.110.072008. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,884 contributors for this article] (2024). Search for neutral long-lived particles that decay into displaced jets in the ATLAS calorimeter in association with leptons or jets using pp collisions at s = 13 TeV. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2024(11). doi: 10.1007/JHEP11(2024)036. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abeling, K.; Abicht, N.J. & Abidi, S.H. [Show all 2,860 contributors for this article] (2024). Measurements of Lund subjet multiplicities in 13 TeV proton-proton collisions with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 859. doi: 10.1016/j.physletb.2024.139090. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,929 contributors for this article] (2024). A precise measurement of the Z-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the ATLAS experiment at s=8 TeV. European Physical Journal C. ISSN 1434-6044. 84(3). doi: 10.1140/epjc/s10052-024-12438-w. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,930 contributors for this article] (2024). Differential cross-section measurements of the production of four charged leptons in association with two jets using the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2024(1). doi: 10.1007/JHEP01(2024)004. Full text in Research Archive
• Filmer, E.K.; Gallagher, J.; Grant, C.M.; Green, M.J.; Jackson, P. & Kong, A.X.Y. [Show all 2,870 contributors for this article] (2024). Search for Formula Presented-parity violating supersymmetric decays of the top squark to a Formula Presented-jet and a lepton in Formula Presented Formula Presented collisions with the ATLAS detector. Physical Review D. ISSN 2470-0010. 110(9). doi: 10.1103/PhysRevD.110.092004. Full text in Research Archive
• Zwalinski, L.; Zou, W.; Zormpa, O.; Zorbas, T.G.; Zoch, K. & Zoccoli, A. [Show all 2,948 contributors for this article] (2024). Search for light long-lived neutral particles from Higgs boson decays via vector-boson-fusion production from pp collisions at √s=13 TeV with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 84(7). doi: 10.1140/epjc/s10052-024-12902-7. Full text in Research Archive Show summary

  A search is reported for long-lived dark photons with masses between 0.1 GeV and 15 GeV, from exotic decays of Higgs bosons produced via vector-boson-fusion. Events that contain displaced collimated Standard Model fermions reconstructed in the calorimeter or muon spectrometer are probed. This search uses the full LHC Run 2 (2015–2√018) data sample collected in proton–proton collisions at s = 13 TeV, corresponding to an integrated luminosity of 139 f b−1. Dominant backgrounds from Standard Model processes and non-collision sources are estimated using datadriven techniques. The observed event yields in the signal regions are consistent with the expected background. Upper limits on the Higgs boson to dark photon branching fraction are reported as a function of the dark photon mean proper decay length or of the dark photon mass and the coupling between the Standard Model and the potential dark sector. This search is combined with previous ATLAS searches obtained in the gluon–gluon fusion andWH production modes. A branching fraction above 10% is excluded at 95% CL for a 125 GeV Higgs boson decaying into two dark photons for dark photon mean proper decay lengths between 173 and 1296mm and mass of 10 GeV.

• Filmer, E.K.; Grant, C.M.; Green, M.J.; Jackson, P.; Kong, A.X.Y. & Pandya, H.D. [Show all 2,859 contributors for this article] (2024). Disentangling Sources of Momentum Fluctuations in Xe + Xe and Pb + Pb Collisions with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 133(25). doi: 10.1103/PhysRevLett.133.252301. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,887 contributors for this article] (2024). Search for the Zγ decay mode of new high-mass resonances in pp collisions at s=13 TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 848. doi: 10.1016/j.physletb.2023.138394. Full text in Research Archive
• Filmer, E.K.; Grant, C.M.; Green, M.J.; Jackson, P.; Kong, A.X.Y. & Pandya, H.D. [Show all 2,876 contributors for this article] (2024). Search for heavy right-handed Majorana neutrinos in the decay of top quarks produced in proton-proton collisions at s=13 TeV with the ATLAS detector. Physical Review D. ISSN 2470-0010. 110(11). doi: 10.1103/PhysRevD.110.112004. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,888 contributors for this article] (2024). Search for the decay of the Higgs boson to a Z boson and a light pseudoscalar particle decaying to two photons. Physics Letters B. ISSN 0370-2693. 850. doi: 10.1016/j.physletb.2024.138536. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abdelhameed, S.; Abeling, K. & Abicht, N.J. [Show all 2,905 contributors for this article] (2024). Search for pair production of boosted Higgs bosons via vector-boson fusion in the bb¯bb¯ final state using pp collisions at s=13TeV with the ATLAS detector. Physics Letters B. ISSN 0370-2693. 858. doi: 10.1016/j.physletb.2024.139007. Full text in Research Archive
• Aad, G.; Aakvaag, Erlend; Abbott, B.; Abeling, K.; Abicht, N.J. & Abidi, S.H. [Show all 2,916 contributors for this article] (2024). Studies of the Energy Dependence of Diboson Polarization Fractions and the Radiation-Amplitude-Zero Effect in WZ Production with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 133(10). doi: 10.1103/PhysRevLett.133.101802. Full text in Research Archive
• Aad, G.; Abbott, B.; Abeling, K.; Abicht, N.J.; Abidi, S.H. & Aboulhorma, A. [Show all 2,932 contributors for this article] (2024). Search for non-resonant Higgs boson pair production in the 2b+2ℓ+ETmiss final state in pp collisions at s = 13 TeV with the ATLAS detector. Journal of High Energy Physics (JHEP). ISSN 1126-6708. 2024(2). doi: 10.1007/JHEP02(2024)037. Full text in Research Archive
• Filmer, E.K.; Gallagher, J.; Grant, C.M.; Green, M.J.; Jackson, P. & Kong, A.X.Y. [Show all 2,878 contributors for this article] (2024). Combination of Searches for Higgs Boson Pair Production in pp Collisions at s = 13 TeV with the ATLAS Detector. Physical Review Letters. ISSN 0031-9007. 133(10). doi: 10.1103/PhysRevLett.133.101801. Full text in Research Archive

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• Zwalinski, L.; Zou, W.; Zormpa, O.; Zorbas, T. G.; Zoch, K. & Zoccoli, A. [Show all 2,931 contributors for this article] (2026). Erratum: Precision measurement of the B0 meson lifetime using B0 → J/ ψ K*0 decays with the ATLAS detector. European Physical Journal C. ISSN 1434-6044. 86(1). doi: 10.1140/epjc/s10052-025-15188-5. Full text in Research Archive
• Zwalinski, L.; Zormpa, O.; Zorbas, T. G.; Zografos, A.; Zoch, K. & Zoccoli, A. [Show all 2,939 contributors for this article] (2026). Erratum: The environmental impact, carbon emissions and sustainability of computing in the ATLAS experiment. European Physical Journal C. ISSN 1434-6044. 86(3). doi: 10.1140/epjc/s10052-026-15357-0. Full text in Research Archive

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