Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 51: Top Physics III (Cross Sections, Entanglement)
T 51.8: Vortrag
Mittwoch, 2. April 2025, 18:00–18:15, VG 1.103
Measurement of differential cross sections in the process pp→ W+W−bb — Daniel Britzger1, •Johannes Hessler1,2, and Stefan Kluth1 — 1Max Planck Institute for Physics, Garching, Germany — 2Technical University Munich, Garching, Germany
Precise measurements of differential cross sections in the process pp→ W+W−bb offer an outstandingly rich physics potential at highest precision. Although the process is theoretically and experimentally well defined, dedicated measurements of W+W−bb production cross sections were not (extensively) performed in the past at the LHC. We will report on ongoing measurements in the single-lepton channel with Run-II data taken by the ATLAS experiment. The analysis comprises three signal regions, focusing on the interference between tt and tW processes, the explicit reconstruction of the kinematics of the WbWb system and on phase spaces motivated by BSM searches.