Göttingen 2025 – scientific programme

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T: Fachverband Teilchenphysik

T 46: Higgs Physics VI (top-Higgs Coupling)

T 46.3: Talk

Wednesday, April 2, 2025, 16:45–17:00, ZHG105

Kinematic reconstruction of ttH (H → bb) events in semileptonic tt final states using Run 2 CMS Simulation — •Kai Adamowicz, Lutz Feld, Danyer Perez Adan, Valeria Botta, and Philipp Nattland — RWTH Aachen

The ttH process provides a direct probe of the top-Higgs Yukawa coupling, an important parameter of the Standard Model. Due to a large and difficult to accurately model ttbb background, its measurement in the H → bb channel proved complicated. Using the transformer-based neural network architecture "SPANet", the prospect of a kinematic reconstruction of the final states is studied on Run 2 CMS simulation. This technique may form the basis of a signal extraction via the standard "bump hunt" approach using the invariant mass of the Higgs candidate, which has been proven succesful in many searches and cross section measurements of the SM Higgs boson in various decay modes.

Keywords: Higgs; Kinematic reconstruction; SPANet; ttH; CMS