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Journal articleAad G, Aakvaag E, Abbott B, et al., 2025,
Search for the jet-induced diffusion wake in the quark-gluon plasma via measurements of jet-track correlations in photon-jet events in (Formula presented) collisions at (Formula presented) with the ATLAS detector
, Physical Review C, Vol: 111, ISSN: 2469-9985This paper presents a measurement of jet-track correlations in photon-jet events, using 1.72 (Formula presented) of (Formula presented) data at (Formula presented) recorded with the ATLAS detector at the LHC. Events with energetic photon-jet pairs are selected, where the photon and jet are approximately back-to-back in azimuth. The angular correlation between jets and charged-particle tracks with transverse momentum ((Formula presented)) in the range 0.5-2.0 GeV in the hemisphere opposite to the jet, (Formula presented), is measured as a function of their relative pseudorapidity difference, (Formula presented). In central (Formula presented) collisions, these correlations are predicted to be sensitive to the diffusion wake in the quark-gluon plasma resulting from the lost energy of high-(Formula presented) partons traversing the plasma, with a characteristic modification as a function of (Formula presented). The correlations are examined with different selections on the jet-to-photon (Formula presented) ratio to select events with different degrees of energy loss. No diffusion wake signal is observed within the current sensitivity and upper limits at 95% confidence level on the diffusion wake amplitude are reported.
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Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2025,
Measurement of the inclusive tt¯ cross section in final states with at least one lepton and additional jets with 302 pb−1 of pp collisions at s = 5.02 TeV
, Journal of High Energy Physics, Vol: 2025A measurement of the top quark pair (tt¯) production cross section in proton-proton collisions at a centre-of-mass energy of 5.02 TeV is presented. The data were collected at the LHC in autumn 2017, in dedicated runs with low-energy and low-intensity conditions with respect to the default configuration, and correspond to an integrated luminosity of 302 pb<sup>−1</sup>. The measurement is performed using events with one electron or muon, and multiple jets, at least one of them being identified as originating from a b quark (b tagged). Events are classified based on the number of all reconstructed jets and of b-tagged jets. Multivariate analysis techniques are used to enhance the separation between the signal and backgrounds. The measured cross section is 62.5±1.6stat−2.5+2.6syst±1.2lumi pb. A combination with the result in the dilepton channel based on the same data set yields a value of 62.3 ± 1.5 (stat) ± 2.4 (syst) ± 1.2 (lumi) pb, to be compared with the standard model prediction of 69.5−3.7+3.5 pb at next-to-next-to-leading order in perturbative quantum chromodynamics.
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Journal articleAalbers J, Abe K, Adrover M, et al., 2025,
Neutrinoless double beta decay sensitivity of the XLZD rare event observatory
, Journal of Physics G: Nuclear and Particle Physics, Vol: 52, ISSN: 0954-3899The XLZD collaboration is developing a two-phase xenon time projection chamber with an active mass of 60–80 t capable of probing the remaining weakly interacting massive particle-nucleon interaction parameter space down to the so-called neutrino fog. In this work we show that, based on the performance of currently operating detectors using the same technology and a realistic reduction of radioactivity in detector materials, such an experiment will also be able to competitively search for neutrinoless double beta decay in 136Xe using a natural-abundance xenon target. XLZD can reach a 3σ discovery potential half-life of 5.7 × 1027 years (and a 90% CL exclusion of 1.3 × 1028 years) with 10 years of data taking, corresponding to a Majorana mass range of 7.3–31.3 meV (4.8–20.5 meV). XLZD will thus exclude the inverted neutrino mass ordering parameter space and will start to probe the normal ordering region for most of the nuclear matrix elements commonly considered by the community.
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Journal article, 2025,
Enriching the physics program of the CMS experiment via data scouting and data parking
, Physics Reports, Vol: 1115, Pages: 678-772, ISSN: 0370-1573 -
Journal article, 2025,
Review of searches for vector-like quarks, vector-like leptons, and heavy neutral leptons in proton–proton collisions at √s=13 TeV at the CMS experiment
, Physics Reports, Vol: 1115, Pages: 570-677, ISSN: 0370-1573 -
Journal article, 2025,
Searches for Higgs boson production through decays of heavy resonances
, Physics Reports, Vol: 1115, Pages: 368-447, ISSN: 0370-1573 -
Journal article, 2025,
Stairway to discovery: A report on the CMS programme of cross section measurements from millibarns to femtobarns
, Physics Reports, Vol: 1115, Pages: 3-115, ISSN: 0370-1573 -
Journal article, 2025,
Dark sector searches with the CMS experiment
, Physics Reports, Vol: 1115, Pages: 448-569, ISSN: 0370-1573 -
Journal article, 2025,
Review of top quark mass measurements in CMS
, Physics Reports, Vol: 1115, Pages: 116-218, ISSN: 0370-1573 -
Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2025,
Proton reconstruction with the TOTEM Roman pot detectors for high-β* LHC data
, JOURNAL OF INSTRUMENTATION, Vol: 20 -
Journal articleChekhovsky V, Hayrapetyan A, Makarenko V, et al., 2025,
Identification of low-momentum muons in the CMS detector using multivariate techniques in proton-proton collisions at √<i>s</i>=13.6 TeV
, JOURNAL OF INSTRUMENTATION, Vol: 20 -
Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2025,
Measurement of the inclusive cross sections for W and Z boson production in proton-proton collisions at √<i>s</i>=5.02 and 13 TeV
, JOURNAL OF HIGH ENERGY PHYSICS- Cite
- Citations: 2
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Journal articleAad G, Aakvaag E, Abbott B, et al., 2025,
Search for Dark Matter Produced in Association with a Dark Higgs Boson in the bb[over ¯] Final State Using pp Collisions at sqrt[s]=13 TeV with the ATLAS Detector.
, Phys Rev Lett, Vol: 134A search is performed for dark matter particles produced in association with a resonantly produced pair of b-quarks with 30<m_{bb}<150 GeV using 140 fb^{-1} of proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the LHC. This signature is expected in extensions of the standard model predicting the production of dark matter particles, in particular those containing a dark Higgs boson s that decays into bb[over ¯]. The highly boosted s→bb[over ¯] topology is reconstructed using jet reclustering and a new identification algorithm. This search places stringent constraints across regions of the dark Higgs model parameter space that satisfy the observed relic density, excluding dark Higgs bosons with masses between 30 and 150 GeV in benchmark scenarios with Z^{'} mediator masses up to 4.8 TeV at 95% confidence level.
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Test of Lepton Flavor Universality with <i>B<sub>s</sub></i><SUP>0</SUP> → φ<i>l</i><SUP>+</SUP> <i>l</i><SUP>-</SUP> Decays
, PHYSICAL REVIEW LETTERS, Vol: 134, ISSN: 0031-9007 -
Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2025,
Search for pair production of heavy particles decaying to a top quark and a gluon in the lepton plus jets final state in proton-proton collisions at √<i>s</i>=13 TeV
, EUROPEAN PHYSICAL JOURNAL C, Vol: 85, ISSN: 1434-6044 -
Journal articleAaij R, Abdelmotteleb ASW, Abellan Beteta C, et al., 2025,
Search for charge-parity violation in semileptonically tagged <i>D</i><SUP>0</SUP> → <i>K</i><SUP>+</SUP> π<SUP>-</SUP> decays
, JOURNAL OF HIGH ENERGY PHYSICS- Cite
- Citations: 2
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Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2025,
Search for Nuclear Modifications of <i>B</i><SUP>+</SUP> Meson Production in <i>p</i>-Pb Collisions at √<i>s</i><sub>NN</sub>=8.16 TeV
, PHYSICAL REVIEW LETTERS, Vol: 134, ISSN: 0031-9007 -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Measurement of CP asymmetry in B<sub>s</sub><SUP>0</SUP> → D<sub>s</sub><SUP>∓</SUP> K<SUP>±</SUP> decays
, JOURNAL OF HIGH ENERGY PHYSICS- Cite
- Citations: 1
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Measurement of φ(1020) meson production in fixed-target <i>p</i> Ne collisions at √<i>s<sub>NN</sub></i>=68.5 GeV
, JOURNAL OF HIGH ENERGY PHYSICS -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Long-lived particle reconstruction downstream of the LHCb magnet (vol 85, 7, 2025)
, EUROPEAN PHYSICAL JOURNAL C, Vol: 85, ISSN: 1434-6044 -
Journal articleChekhovsky V, Hayrapetyan A, Makarenko V, et al., 2025,
Constraints on standard model effective field theory for a Higgs boson produced in association with W or Z bosons in the H → b(b)over-bar decay channel in proton-proton collisions at √<i>s</i>=13 TeV
, JOURNAL OF HIGH ENERGY PHYSICS -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
First Evidence for Direct <i>CP</i> Violation in Beauty to Charmonium Decays
, PHYSICAL REVIEW LETTERS, Vol: 134, ISSN: 0031-9007- Cite
- Citations: 2
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Study of Λ<sub>b</sub><SUP>0</SUP> and Ξ<sub>b</sub><SUP>0</SUP> Decays to Λh<SUP>+</SUP> h'<SUP>-</SUP> - and Evidence for CP Violation in Λ<sub>b</sub><SUP>0</SUP> → ΛK<SUP>+</SUP> K<SUP>-</SUP> Decays
, PHYSICAL REVIEW LETTERS, Vol: 134, ISSN: 0031-9007- Cite
- Citations: 5
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Observation of the Open-Charm Tetraquark Candidate <i>Tcs</i>0*(2870)<SUP>0</SUP> in the <i>B</i><SUP>-</SUP> → <i>D</i><SUP>-</SUP> <i>D</i><SUP>0</SUP><i>K<sub>S</sub></i><SUP>0</SUP> Decay
, PHYSICAL REVIEW LETTERS, Vol: 134, ISSN: 0031-9007 -
Journal articleThielemann F, Siemund J, von Schoenfeld D, et al., 2025,
Exploring Atom-Ion Feshbach Resonances below the s-Wave Limit
, PHYSICAL REVIEW X, Vol: 15, ISSN: 2160-3308- Cite
- Citations: 4
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Journal articleAaij R, Abdelmotteleb ASW, Abellan Beteta C, et al., 2025,
Constraints on the photon polarisation in <i>b → sγ</i> transitions using B<sub>s</sub><SUP>0</SUP><i>→ φe</i><SUP>+</SUP><i>e<SUP>-</SUP></i> decays
, JOURNAL OF HIGH ENERGY PHYSICS -
Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2025,
Test of lepton flavor universality in semileptonic (Formula presented) meson decays in proton-proton collisions at (Formula presented)
, Physical Review D, Vol: 111, ISSN: 2470-0010A measurement of the ratio of branching fractions (Formula presented) in the (Formula presented), (Formula presented) decay channel is presented. This measurement uses a sample of proton-proton collision data collected at a center-of-mass energy of (Formula presented) by the CMS experiment in 2018, corresponding to an integrated luminosity of (Formula presented). The measured ratio, (Formula presented), agrees with the value of (Formula presented) predicted by the standard model, which assumes lepton flavor universality. By testing lepton flavor universality, this measurement is a probe of new physics using (Formula presented) mesons, which are currently only produced at the LHC.
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Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2025,
Search for light long-lived particles decaying to displaced jets in proton-proton collisions at √<i>s</i>=13.6TeV
, REPORTS ON PROGRESS IN PHYSICS, Vol: 88, ISSN: 0034-4885- Cite
- Citations: 2
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Journal articleZwalinski L, Zou W, Zormpa O, et al., 2025,
Software and computing for Run 3 of the ATLAS experiment at the LHC
, European Physical Journal C, Vol: 85, ISSN: 1434-6044The 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.
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Journal articleAcero MA, Acharya B, Adamson P, et al., 2025,
Measurement of d2σ/d
, Physical Review D, Vol: 111, ISSN: 2470-0010Double- and single-differential cross sections for inclusive charged-current νμ-nucleus scattering are reported for the kinematic domain 0 to 2 GeV/c in three-momentum transfer and 0 to 2 GeV in available energy, at a mean νμ energy of 1.86 GeV. The measurements are based on an estimated 995,760 νμ charged-current (CC) interactions in the scintillator medium of the NOvA Near Detector. The subdomain populated by 2-particle-2-hole (2p2h) reactions is identified by the cross section excess relative to predictions for νμ-nucleus scattering that are constrained by a data control sample. Models for 2-particle-2-hole processes are rated by χ2 comparisons of the predicted-versus-measured νμ CC inclusive cross section over the full phase space and in the restricted subdomain. Shortfalls are observed in neutrino generator predictions obtained using the theory-based València and SuSAv2 2p2h models.
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