ATLAS Preprints

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2025-04-11
08:09

Measurement of coincident photon-initiated processes in ultra-peripheral Pb+Pb collisions with the ATLAS detector / ATLAS Collaboration
The Lorentz-contracted electromagnetic fields of the ions in ultra-relativistic heavy-ion collisions generate intense quasi-real photon fluxes. [...]
arXiv:2504.07795 ; CERN-EP-2025-071. - 2025 - 34.
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2025-04-11
07:31

Constraining off-shell Higgs boson production and the Higgs boson total width using $WW\to \ell\nu\ell\nu$ final states with the ATLAS detector / ATLAS Collaboration
A measurement of off-shell Higgs boson production is performed in the

$H^{*} \rightarrow WW$ channel. [...]
arXiv:2504.07710 ; CERN-EP-2025-059. - 2025 - 43.
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2025-04-10
14:18

Measurements of Higgs boson production via gluon-gluon fusion and vector-boson fusion using $H\rightarrow WW^\ast \rightarrow \ell\nu\ell\nu$ decays in $pp$ collisions with the ATLAS detector and their effective field theory interpretations / ATLAS Collaboration
Higgs boson production cross-sections via gluon-gluon fusion and vector-boson fusion in proton-proton collisions are measured in the

$H\rightarrow WW^\ast \rightarrow \ell\nu\ell\nu$ decay channel. [...]
arXiv:2504.07686 ; CERN-EP-2025-054. - 2025 - 89.
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2025-04-08
15:30

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 / ATLAS Collaboration
Measurements of

$t\bar{t}\ell^{+}\ell^{-}$ production in the region of high dilepton invariant mass with effective field theory (EFT) interpretations are presented. [...]
arXiv:2504.05919 ; CERN-EP-2025-053. - 2025 - 52.
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2025-04-07
15:34

Measurement of substructure-dependent suppression of large-radius jets with charged particles in Pb+Pb collisions with ATLAS / ATLAS Collaboration
Measurements of jet substructure in Pb+Pb collisions provide key insights into the mechanism of jet quenching in the hot and dense QCD medium created in these collisions. [...]
arXiv:2504.04805 ; CERN-EP-2025-078. - 2025 - 34.
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2025-04-03
17:03

Characterization of nuclear breakup as a function of hard-scattering kinematics using dijets measured by ATLAS in $p$ +Pb collisions / ATLAS Collaboration
This Letter analyzes the sensitivity of event geometry estimators to the initial-state kinematics of hard scattering in proton-lead collisions. [...]
arXiv:2504.02638 ; CERN-EP-2025-077. - 2025 - 39.
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2025-04-01
13:10

Evidence for the collective nature of radial flow in Pb+Pb collisions with the ATLAS detector / ATLAS Collaboration
Anisotropic flow and radial flow are two key probes of the expansion dynamics and properties of the quark-gluon plasma (QGP). [...]
arXiv:2503.24125 ; CERN-EP-2025-068. - 2025 - 31.
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2025-03-29
17:12

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 / ATLAS Collaboration
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 SM, referred to as the '4321' model. [...]
arXiv:2503.22581 ; CERN-EP-2025-055. - 2025 - 60.
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2025-03-26
17:07

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 / ATLAS Collaboration
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 recorded in 2015-2018. [...]
arXiv:2503.20445 ; CERN-EP-2025-062. - 2025 - 57.
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2025-03-26
14:49

Projections for Key Measurements in Heavy Flavour Physics / ATLAS, The ; II, Belle ; Cms /ATLAS Collaboration ; Belle II Collaboration ; CMS Collaboration ; LHCb Collaboration
Precision studies of flavour-changing processes involving quarks and leptons provide a number of ways to improve knowledge of the Standard Model and search for physics beyond it. There are excellent short- and mid-term prospects for significantly improved measurements in heavy flavour physics (involving b and c hadrons and τ leptons), with upgrades in progress or planned for the ATLAS, CMS and LHCb experiments exploiting proton-proton collisions at CERN's Large Hadron Collider, and for the Belle II experiment operating with electron-positron collisions from the SuperKEKB accelerator in KEK. [...]
ATL-PHYS-PUB-2025-020; CMS-BPH-25-001; LHCb-PUB-2025-008; Belle II Preprint 2025-007; KEK Preprint 2025-5; arXiv:2503.24346; CERN-LHCb-PUB-2025-008; CERN-ATL-PHYS-PUB-2025-020; CERN-CMS-BPH-25-001.- Geneva : CERN, 2025 - mult.p. Fulltext: LHCb-PUB-2025-008 - PDF; 2503.24346 - PDF;

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