Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 46: Di-Higgs 1 (bbττ)

T 46.4: Vortrag

Dienstag, 5. März 2024, 16:45–17:00, Geb. 30.41: HS 1

Streamlined optimization studies in the search for di-Higgs boson production — •Steffen Ludwig, Karsten Köneke, Christian Weiser, and Karl Jakobs — University of Freiburg, Institute of Physics, Freiburg im Breisgau, Germany

The Higgs boson has been studied at the Large Hadron Collider at CERN over the last decade with ever-increasing precision. However, one key quantity, the strength of the trilinear Higgs boson coupling, has still eluded direct precision measurements. A measurement of its coupling strength modifier κ_λ, defined as the ratio of the observed value by its Standard Model prediction, that differs from unity would be a sign of new physics.

I will discuss the prospects of the search for the non-resonant production of Higgs boson pairs in the HH → bbτ⁺τ⁻ channel using 140 fb⁻¹ of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector at CERN.

To study the impact of Graph Neural Networks on the analysis, I developed an automatization tool called grid-pipeline to conduct and orchestrate the original analysis pipeline and its derivatives. Due to its versatility, it enables the elementarization of complex computing workflows, even in mixed computing site scenarios. This allows for a highly improved analysis optimization workflow and minimized turn-around time.

Keywords: di-Higgs; self-coupling; bbtautau; workflow; pipeline