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T: Fachverband Teilchenphysik

T 46: Di-Higgs 1 (bbττ)

T 46.5: Vortrag

Dienstag, 5. März 2024, 17:00–17:15, Geb. 30.41: HS 1

Improving the sensitivity to the Higgs boson self-coupling in the HH→ bbττ channel with the ATLAS experiment — •Katharina Häußler, Christian Weiser, Karsten Köneke, and Karl Jakobs — University of Freiburg, Germany

The Standard Model (SM) predicts interactions involving multiple Higgs bosons, which have yet to be observed experimentally. Higgs boson pair production provides the most sensitive test of such triple Higgs boson self-interactions and the bbττ final state presents a good compromise between expected signal yield and background contamination, making it one of the three golden channels to explore this phenomenon.

This talk focuses on improvements that can be made in future analyses to increase the sensitivity to anomalous values of the Higgs boson self-coupling modifier κ_λ. Significant deviations from the SM prediction would provide a strong indication of physics beyond the Standard Model.

Keywords: di-Higgs; self-coupling; bbtautau