Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 56: Electroweak Physics II (Multi-boson Processes)
T 56.6: Vortrag
Mittwoch, 2. April 2025, 17:30–17:45, VG 2.103
Constraining Triple Gauge Boson Couplings at Future Higgs Factories — •Leonhard Reichenbach1,2, Andre Silva3,4, André Sailer1, Christian Grefe2, Philip Bechtle2, Jenny List3, and Klaus Desch2 — 1CERN, Geneva, Switzerland — 2Universität Bonn, Germany — 3DESY, Hamburg, Germany — 4Universidade de Coimbra, Portugal
We provide projections on the precision of (anomalous) ZWW/γ WW triple gauge couplings (aTGC) using an optimal observable analysis of the process e+e−→ ℓν qq at center of mass energies of 240–250 GeV. The measurements of aTGC provide crucial input to global fits of Higgs couplings and SMEFT-based searches for new physics and offer a unique test of the gauge symmetry of the electroweak interaction. The current aTGC projections for future Higgs factories are either theory-only studies, neglecting experimental effects or extrapolations of older full-simulation studies for energies of 500–1000 GeV. We perform this analysis using the Key4hep framework, which enables us to perform the same analysis using several different detector models at different Higgs factories. This way, we will for the first time present consistently obtained results for the ILD detector for the International Linear Collider (ILC) and the CLD detector for the Future Circular Collider (FCC-ee).
Keywords: triple gauge couplings; FCC; ILC; Key4hep; future colliders