SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 136: Higgs TH, VH

T 136.1: Vortrag

Donnerstag, 23. März 2023, 17:30–17:45, HSZ/0204

Associated production of a Higgs boson and a single top quark from t-channel production (tHq) in channels with hadronically decaying tau leptons at ATLAS — •Christian Kirfel, Ian C. Brock, Tanja Holm, and Oleh Kivernyk — Physikalisches Institut Bonn

A measurement of the single top-quark production in association with a Higgs boson and a spectator light-quark (tHq) gives insight into the properties of not only the top quark but also the Higgs boson. The associated production is uniquely sensitive to the relative sign of the top quark-Higgs boson Yukawa coupling. Additionally, the ditau decay of the Higgs boson, which successively decay hadronically, allows for precise reconstruction of the Higgs mass. The desired precision is limited by the plethora of background processes with higher cross sections.

This talk will discuss the search for this channel in the Run 2 LHC dataset by ATLAS.