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T: Fachverband Teilchenphysik
T 89: Higgs Physics IX
T 89.2: Vortrag
Freitag, 20. März 2026, 09:15–09:30, KH 00.014
Measurements of H → τ τ CP properties at FCC-ee — •Sofia Giappichini1, Markus Klute1, Matteo Presilla1, and Xunwu Zuo2 — 1Institute for Experimental Particle Physics (ETP), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany — 2Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne, Switzerland
The Future Circular Collider (FCC-ee), a key pillar of the European Strategy for Particle Physics, offers unprecedented precision for studying the Higgs boson. The decay H → τ τ stands out due to its sizable branching ratio, clean experimental environment, and sensitivity to tau polarization, making it an ideal channel to probe the CP properties of the Yukawa couplings and search for signs of CP violation beyond the Standard Model. We highlight the prospects for measuring CP-odd components in the H → τ τ decays through angular and polarization observables in associated ZH production at a center-of-mass energy of 240 GeV within the Anomalous Coupling and the Effective Field Theory frameworks.
Keywords: Higgs properties; CP violation; future circular collider; EFT