SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 81: Single Top, Top Properties

T 81.3: Vortrag

Mittwoch, 22. März 2023, 18:00–18:15, HSZ/0103

first simultaneous differential measurement of tZq and ttZ with the CMS detector — •Federica Cecilia Colombina — Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg

With the large dataset of proton-proton collisions recorded during LHC Run-2, several precise and differential measurements of both ttZ and tZq processes have been produced with the CMS experiment. These two processes are mutual backgrounds to one another. In previous measurements, background processes were assumed to follow the expectations of the standard model. In this measurement, for the first time, both processes ttZ and tZq are measured simultaneously and differentially. The measurement will therefore be more sensitive to new physics, and particularly suitable for effective field theory interpretations.