Erlangen 2026 – scientific programme
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T: Fachverband Teilchenphysik
T 77: Higgs Physics VIII
T 77.3: Talk
Thursday, March 19, 2026, 16:45–17:00, KH 02.013
Mass-decorrelated signal versus background classification for ttH(bb) events in single- and dileptonic final states using Run 3 CMS Simulation — •Kai Adamowicz1, Lutz Feld1, Valeria Botta1, Danyer Perez Adan1, Philipp Nattland1, Matin Torkian2, Maria Aldaya Martin2, and Daina Leyva Pernia2 — 1RWTH Aachen University — 2DESY
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 has proven challenging in previous attempts by the CMS and ATLAS collaborations. Using the transformer based neural network architecture "SPANet", the prospect of a mass decorrelated kinematic reconstruction of the final states and event classification is studied on Run 3 CMS simulation. This way, the invariant mass of the jets assigned to the Higgs candidate may be used as an unbiased fit variable.
Keywords: Higgs; ttH; SPANet