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T: Fachverband Teilchenphysik
T 101: Searches/BSM VI
T 101.5: Vortrag
Freitag, 20. März 2026, 10:00–10:15, KH 02.018
Exploring boosted top quark decays using Run 3 data collected by the CMS experiment — •Johanna Matthiesen1, Johannes Haller1, Roman Kogler2, and Daniel Savoiu1 — 1Institut für Experimentalphysik, Universität Hamburg — 2DESY, Hamburg
Highly energetic top quarks produced in proton-proton collisions at the LHC can result in decay products that are highly collimated, appearing as a single large-radius jet in the CMS detector. These jets exhibit a distinctive internal substructure, enabling discrimination between top quark jets and those arising from other QCD processes. This boosted topology offers a unique opportunity to probe for new heavy particles decaying into top-antitop quark pairs. This presentation provides first insights from the ongoing data taking at the LHC, focusing on the top-antitop quark mass spectrum as a potential window to new physics phenomena with a focus on heavy Z′ bosons. The analysis strategy as well as first results will be presented.
Keywords: Search; LHC; Top Quarks; CMS