Erlangen 2026 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 3: Standard Model Physics I

T 3.7: Vortrag

Montag, 16. März 2026, 17:45–18:00, KH 00.014

Production of hadronically-decaying boosted vector bosons reconstructed as large-radius jets at the ATLAS experiment — •Donna Maria Mattern and Chris Malena Delitzsch — TU Dortmund, Fakultät Physik

At the Large Hadron Collider (LHC), W and Z bosons are often produced with large Lorentz boosts due to the high energies of the proton-proton collisions. When such boosted vector bosons (BVBs) decay hadronically, they are reconstructed as large-radius jets (R=1.0) at the ATLAS experiment. These large-radius jets pass through a chain of different calibration steps, including an in-situ jet energy scale correction to account for differences between data and Monte Carlo simulation, before they can be used in analyses. To separate BVB jets from the much more abundantly produced background jets from quantum-chromodynamic (QCD) processes at the LHC, their substructure is considered, which describes the energy flow within the large-radius jet. Using a neutral-network based tagger that relies on substructure information and is decorrelated with the input large-radius jet’s mass, the background events can be suppressed. This talk discusses important aspects of the cross-section measurement of hadronically-decaying BVBs in association with jets.

Keywords: large-radius jets; jet substructure; electroweak vector bosons