Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 98: Electroweak Physics III (W/Z Production and Properties)

T 98.3: Vortrag

Freitag, 4. April 2025, 09:30–09:45, VG 2.103

Production of hadronically-decaying boosted vector bosons in association with jets at the ATLAS experiment — •Donna Maria Mattern and Chris Malena Delitzsch — TU Dortmund, Fakultät Physik

Due to the unprecedented energy of the proton-proton collisions at the Large Hadron Collider (LHC), massive electroweak vector bosons (W and Z bosons) are frequently produced with energies much larger than their masses, thus receiving a Lorentz boost. When these particles decay hadronically, their decay products are collimated and can be reconstructed as single large-radius jets (R=1.0). These high-transverse momentum large-radius jets have distinctive properties like their mass, and jet-substructure, which describes the internal structure of the jet. Signal events have to be distinguished from large sources of background events produced from quantum-chromodynamic processes at the LHC, which have similar, multi-jet signatures. Studies of the large-radius-jet substructure are useful to discriminate between these signal and background processes to be able to measure the production of the boosted-vector bosons. Studies on the production of W and Z bosons in association with jets in LHC Run-2 data collected with the ATLAS detector, and Monte Carlo simulated samples are presented.

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