2025-11-12 19:24 |
Modelling for top analyses with Herwig7
/ Cunnett, Betsy (University of Sussex (GB)) ; McFayden, Josh (University of Sussex (GB))
/ATLAS Collaboration
Uncertainties in the predictions of general-purpose Monte-Carlo event generators related to parton showering or hadronisation and other non-perturbative effects are a leading source of systematic uncertainty in many ATLAS analyses. These are often estimated using a two-point comparison of two generators that use different models; however, this approach is flawed and can lead to uncertainties that are poorly justified. [...]
ATL-PHYS-SLIDE-2025-635.-
Geneva : CERN, 2025 - 16 p.
Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
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2025-11-12 08:04 |
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2025-11-11 23:19 |
Deep Learning for Primary Vertex Identification in the ATLAS Experiment
/ Garg, Rocky Bala (Stanford University (US))
/ATLAS Collaboration
The exponential time scaling of traditional primary vertex reconstruction algorithms, such as the Adaptive Multi-Vertex Finder (AMVF), raises significant performance concerns for future high-pileup environments, particularly with the upcoming High Luminosity upgrade to the Large Hadron Collider. In this talk, we introduce PV-Finder, a deep learning-based approach that leverages reconstructed track parameters to directly predict primary vertex positions and track-to-vertex associations. [...]
ATL-SOFT-SLIDE-2025-633.-
Geneva : CERN, 2025 - 1 p.
Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
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2025-11-10 14:40 |
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2025-11-10 14:13 |
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2025-11-10 13:13 |
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2025-11-10 09:56 |
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2025-11-10 09:55 |
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2025-11-10 09:55 |
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2025-11-10 09:53 |
Measurement of the top quark Yukawa coupling from $t\bar{t}$ differential cross-section
/ Sinha, Supriya (Deutsches Elektronen-Synchrotron (DE))
/ATLAS Collaboration
The top-quark Yukawa coupling is extracted from the distribution of the top-quark pair ($t \bar{t}$) invariant mass in proton-proton collisions using $140\,\mathrm{fb}^{-1}$ of data at $\sqrt{s} = 13$ TeV collected in 2015-2018 by the ATLAS experiment at the Large Hadron Collider. In the region near the production threshold, the $t \overline{t}$ invariant mass spectrum is sensitive to electroweak virtual corrections, including contributions from Higgs boson exchange, thereby providing sensitivity to the top-quark Yukawa coupling. [...]
ATL-PHYS-SLIDE-2025-626.-
Geneva : CERN, 2025
Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
In : LHC Top WG Meeting, Online, Online, 5 - 7 Nov 2025
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