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Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2025,
Operation and performance of the CMS silicon strip tracker with proton-proton collisions at the CERN LHC
, JOURNAL OF INSTRUMENTATION, Vol: 20 -
Journal articleAalbers J, Akerib DS, Al Musalhi AK, et al., 2025,
Measurements and models of enhanced recombination following inner-shell vacancies in liquid xenon
, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 112, ISSN: 1550-7998Electron-capture decays of 125 Xe and 127 Xe , and double-electron-capture decays of 124 Xe , are backgrounds in searches for weakly interacting massive particles (WIMPs) conducted by dual-phase xenon time projection chambers such as LUX-ZEPLIN (LZ). These decays produce signals with more light and less charge than equivalent-energy 𝛽 decays and correspondingly overlap more with WIMP signals. We measure three electron-capture charge yields in LZ: the 1.1 keV M-shell, 5.2 keV L-shell, and 33.2 keV K-shell at drift fields of 193 and 96.5 V/cm. The LL double-electron-capture decay of 124 Xe exhibits even more pronounced shifts in charge and light. We provide a first model of double-electron-capture charge yields using the link between ionization density and electron-ion recombination, and identify a need for more accurate calculations. Finally, we discuss the implications of the reduced charge yield of these decays and other interactions creating inner-shell vacancies for future dark matter searches.
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Observation of the Very Rare Σ<SUP>+</SUP> → <i>p</i>μ<SUP>+</SUP>μ<SUP>-</SUP> Decay
, PHYSICAL REVIEW LETTERS, Vol: 135, ISSN: 0031-9007 -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Observation of the Λ<i><sub>b</sub></i><SUP>0</SUP> → <i>J</i>/ψ Ξ<SUP>-</SUP> <i>K</i><SUP>+</SUP> and Ξ<i><sub>b</sub></i><SUP>0</SUP> → <i>J</i>/ψ Ξ<SUP>-</SUP> π<SUP>+</SUP> decays
, EUROPEAN PHYSICAL JOURNAL C, Vol: 85, ISSN: 1434-6044 -
Journal articleAaij R, Abdelmotteleb ASW, Abellan Beteta C, et al., 2025,
Measurement of the ψ(2S) to J/ψ cross-section ratio as a function of centrality in PbPb collisions at √s<sub>NN</sub>=5.02 TeV
, JOURNAL OF HIGH ENERGY PHYSICS -
Journal articleAad G, Aakvaag E, Abbott B, et al., 2025,
Search for displaced leptons in √s=13 TeV and 13.6 TeV pp collisions with the ATLAS detector
, Physical Review D, Vol: 112, ISSN: 2470-0010A search for leptons displaced from the primary vertex is performed with the ATLAS detector at the Large Hadron Collider. The search includes the full proton-proton collision dataset collected during Run 2 at √s = 13 TeV and a partial dataset collected during Run 3 in 2022–2023 at √s = 13.6 TeV, corresponding to integrated luminosities of 140 fb<sup>−1</sup> and 56.3 fb<sup>−1</sup>, respectively. Final states with displaced electrons or muons are considered, and novel triggers introduced in Run 3 are employed that use large impact parameter tracking to reconstruct displaced tracks with low momentum. In addition, photon reconstruction and multivariate techniques are employed to broaden the sensitivity to channels with large background rates or highly displaced electrons, respectively. The results are consistent with the Standard Model background expectations and are used to set model-independent limits on the production of displaced electrons and muons. The analysis is also interpreted in the context of a gauge-mediated supersymmetry breaking model with pair-produced long-lived sleptons and a dark sector model with pairproduced chargino-like states. The results include 95% confidence level exclusions of selectrons with lifetimes from 4 ps to 60 ns and a mass of 150 GeV, and exclusions of selectrons, smuons, and staus with a lifetime of 0.3 ns for masses up to 740, 830, and 440 GeV, respectively. Dark charginos with masses up to 380 GeVare excluded for a mass difference with the neutral state of 40 GeV, and mass differences down to 17 GeV are excluded for dark charginos with a 100 GeV mass.
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Measurement of the branching fraction ratio <i>R<sub>K</sub></i> at large dilepton invariant mass
, JOURNAL OF HIGH ENERGY PHYSICS -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Observation of charge-parity symmetry breaking in baryon decays
, NATURE, Vol: 643, Pages: 1223-+, ISSN: 0028-0836- Cite
- Citations: 6
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Journal articleChekhovsky V, Hayrapetyan A, Makarenko V, et al., 2025,
Observation of <i>W</i>Zγ production and constraints on new physics scenarios in proton-proton collisions at √<i>s</i>=13 TeV
, PHYSICAL REVIEW D, Vol: 112, ISSN: 2470-0010- Cite
- Citations: 1
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Journal articleAad G, Aakvaag E, Abbott B, et al., 2025,
Search for long-lived charged particles using large specific ionisation loss and time of flight in 140 fb<SUP><i>-</i>1</SUP> of <i>pp</i> collisions at √<i>s</i>=13 TeV with the ATLAS detector
, JOURNAL OF HIGH ENERGY PHYSICS -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Observation of the decay <i>B</i><SUP>0</SUP><i><sub>s</sub></i> → <i>K</i><SUP>0</SUP><i>p</i>(<i>p</i>)over-bar and measurement of the <i>B</i><SUP>0</SUP><sub>(<i>s</i>)</sub> → <i>K</i><SUP>0</SUP><i>p</i>(<i>p</i>)over-bar branching fractions
, JOURNAL OF HIGH ENERGY PHYSICS -
Journal articleChekhovsky V, Hayrapetyan A, Makarenko V, et al., 2025,
Search for jet quenching with dijets from high-multiplicity pPb collisions at √s<sub>NN</sub>=8<i>.</i>16 TeV
, JOURNAL OF HIGH ENERGY PHYSICS -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Evidence for <i>B</i><SUP>-</SUP> → <i>D</i>**<SUP>0</SUP>τ<SUP>-</SUP>(ν)over-bar<sub>τ</sub> Decays
, PHYSICAL REVIEW LETTERS, Vol: 135, ISSN: 0031-9007 -
Journal articleCapdevila B, Matias J, Novoa-Brunet M, et al., 2025,
Model-independent unbinned analysis of <i>B</i> → <i>K*</i> (→ <i>K</i><SUP>+</SUP>π<SUP>-</SUP> )μ<SUP>+</SUP>μ<SUP>-</SUP>: Zeroes, bounds, Wilson coefficients, and symmetries
, PHYSICAL REVIEW D, Vol: 112, ISSN: 2470-0010 -
Journal articleHan S, Abe K, Abe S, et al., 2025,
Measurement of neutron production in atmospheric neutrino interactions at Super-Kamiokande
, PHYSICAL REVIEW D, Vol: 112, ISSN: 2470-0010 -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2025,
Angular analysis of the decay Bs0<i>→ φe</i><SUP>+</SUP><i>e<SUP>-</SUP></i>
, JOURNAL OF HIGH ENERGY PHYSICS -
Journal articleAad G, Aakvaag E, Abbott B, et al., 2025,
Measurement of W<SUP>±</SUP>-boson differential cross-sections in proton-proton collisions with low pile-up data at √s=5.02TeV and 13TeV with the ATLAS detector
, EUROPEAN PHYSICAL JOURNAL C, Vol: 85, ISSN: 1434-6044 -
Journal articleAad G, Aakvaag E, Abbott B, et al., 2025,
Differential cross-section measurements of D± and Ds± meson production in proton-proton collisions at s = 13 TeV with the ATLAS detector
, Journal of High Energy Physics, Vol: 2025The production of D<sup>±</sup> and Ds± charmed mesons is measured using the D<sup>±</sup>/Ds±→ ϕ(μμ)π<sup>±</sup> decay channel with 137 fb<sup>−1</sup> of s = 13 TeV proton-proton collision data collected with the ATLAS detector at the Large Hadron Collider during the years 2016–2018. The charmed mesons are reconstructed in the range of transverse momentum 12 < p<inf>T</inf> < 100 GeV and pseudorapidity |η| < 2.5. The differential cross-sections are measured as a function of transverse momentum and pseudorapidity, respectively, and compared with next-to-leading- order QCD predictions. The predictions are found to be consistent with the measurements in the visible kinematic region within the large theoretical uncertainties.
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Journal articleAalbers J, Akerib DS, Al Musalhi AK, et al., 2025,
Dark Matter Search Results from 4.2 Tonne-Years of Exposure of the LUX-ZEPLIN (LZ) Experiment
, PHYSICAL REVIEW LETTERS, Vol: 135, ISSN: 0031-9007- Cite
- Citations: 12
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Journal articleZwalinski L, Zou W, Zormpa O, et al., 2025,
Energy scale and resolution for anti-kt jets with radius parameters R=0.2 and 0.6 measured in proton-proton collisions at s=13 TeV with the ATLAS detector
, European Physical Journal C, Vol: 85, ISSN: 1434-6044Jets with different radius parameters R are an important tool for probing quantum chromodynamics processes at different angular scales. Jets with small R=0.2 are instrumental in measurements of the substructure of large-R jets resulting from collimated hadronic decays of energetic W, Z, and Higgs bosons, top quarks, and of potential new resonances. This paper presents measurements of the energy scale, resolution, and associated uncertainties of jets with radius parameters R=0.2 and 0.6, obtained using the ATLAS detector. The results are based on 37fb-1 of proton–proton collision data from the Large Hadron Collider at a centre-of-mass energy of s=13 TeV. A new in situ method for measuring jet energy scale differences between data and Monte Carlo simulations is presented. The systematic uncertainties in the jet energy scale for central jets (|η|<1.2) typically vary from 1% to about 5% as a function of |η| at very low transverse momentum, pT, of around 20 GeV for both R=0.2 and 0.6 jets. The relative energy resolution ranges from (35±6)% at pT=20 GeV to (6±0.5)% at pT=300 GeV for central R=0.2 jets, and is found to be slightly worse for R=0.6 jets. Finally, the effect of close-by hadronic activity on the jet energy scale is investigated and is found to be well modelled by the ATLAS Monte Carlo simulations.
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Journal articleZwalinski L, Zou W, Zormpa O, et al., 2025,
Precision measurement of the B0 meson lifetime using B0→J/ψK∗0 decays with the ATLAS detector
, European Physical Journal C, Vol: 85, ISSN: 1434-6044A measurement of the B0 meson lifetime using B0→J/ψK∗0 decays in data from 13 TeV proton–proton collisions with an integrated luminosity of 140fb-1 recorded by the ATLAS detector at the LHC is presented. The measured effective lifetime is (Formula presented.) The average decay width extracted from the effective lifetime, using parameters from external sources, is (Formula presented.) where the uncertainties are statistical, systematic and from external sources. The earlier ATLAS measurement of Γs in the Bs0→J/ψϕ decay was used to derive a value for the ratio of the average decay widths Γd and Γs for B0 and Bs0 mesons respectively, of (Formula presented.) The measured lifetime, average decay width and decay width ratio are in agreement with theoretical predictions and with measurements by other experiments. This measurement provides the most precise result of the effective lifetime of the B0 meson to date.
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Journal articleAad G, Aakvaag E, Abbott B, et al., 2025,
Cross-section measurements for the production of a W-boson in association with high-transverse-momentum jets in pp collisions at s = 13 TeV with the ATLAS detector
, European Physical Journal C, Vol: 85, ISSN: 1434-6044A 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 s=13 TeV collected by the ATLAS detector at the LHC. The measurements are performed in final states in which the W-boson decays into an electron or muon plus a neutrino and is produced in association with jets with pTEMPTY>30 GeV, where the leading jet has pTEMPTY>500 GeV. The angular separation between the lepton and the closest jet with pTEMPTY>100 GeV is measured and used to define a collinear phase space, wherein measurements of kinematic properties of the W-boson and the associated jet are performed. The collinear phase space is populated by dijet events radiating a W-boson and events with a W-boson produced in association with several jets and it serves as an excellent data sample to probe higher-order theoretical predictions. Measured differential distributions are compared with predictions from state-of-the-art next-to-leading order multi-leg merged Monte Carlo event generators and a fixed-order calculation of the W+1-jet process computed at next-to-next-to-leading order in the strong coupling constant.
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Journal articleAbbaneo D, Acampora G, Ahmad S, et al., 2025,
Installation and performance of the 3rd Veto plane at the SND@LHC detector
, JOURNAL OF INSTRUMENTATION, Vol: 20 -
Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2025,
Search for heavy neutral Higgs bosons A and H in the t(t)over-barZ channel in proton-proton collisions at 13 TeV
, PHYSICS LETTERS B, Vol: 866, ISSN: 0370-2693 -
Journal articleChekhovsky V, Hayrapetyan A, Makarenko V, et al., 2025,
Observation of nuclear modification of energy-energy correlators inside jets in heavy ion collisions
, PHYSICS LETTERS B, Vol: 866, ISSN: 0370-2693 -
Journal articleAad G, Aakvaag E, Abbott B, et al., 2025,
Observation of <i>VVZ</i> production at √<i>s</i>=13 TeV with the ATLAS detector
, PHYSICS LETTERS B, Vol: 866, ISSN: 0370-2693- Cite
- Citations: 1
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Journal articleReed N, Magi M, Tark K, et al., 2025,
Classifying low-Z materials with cosmic-ray muon tomography for border security
, JOURNAL OF INSTRUMENTATION, Vol: 20 -
Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2025,
Measurement of the Drell-Yan forward-backward asymmetry and of the evffective leptonic weak mixing angle in proton-proton collisions at √s=13TeV
, PHYSICS LETTERS B, Vol: 866, ISSN: 0370-2693 -
Journal articleAbratenko P, Aldana DA, Arellano L, et al., 2025,
First study of neutrino angle reconstruction using quasielasticlike interactions in MicroBooNE
, PHYSICAL REVIEW D, Vol: 111, ISSN: 2470-0010 -
Journal articleAbud AA, Acciarri R, Acero MA, et al., 2025,
Neutrino interaction vertex reconstruction in DUNE with Pandora deep learning
, EUROPEAN PHYSICAL JOURNAL C, Vol: 85, ISSN: 1434-6044
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