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T: Fachverband Teilchenphysik
T 11: Higgs: bosonic decays and quantum numbers
T 11.4: Vortrag
Montag, 30. März 2020, 17:15–17:30, H-HS XII
Investigation of the CP properties of VBF Higgs production in the H→ τhadτhad channel with the ATLAS detector — •Serhat Ördek and Stan Lai — Georg-August-Universität Göttingen
Recent studies at the LHC have led to the observation of the Higgs boson decay to tau leptons with a rate compatible with the Standard Model expectation. This observation opens the possibility of a more in-depth investigation of the properties of the production and decay of a Higgs boson into tau leptons, including whether or not the Higgs boson couplings involved violate CP conservation. The analysis presented in this talk focuses on events where Higgs bosons are produced via vector boson fusion in order to investigate the tensor structure of their coupling to electroweak gauge bosons. For this, a profile likelihood fit using a matrix-element observable method is employed in the decay to tau leptons to test whether a CP-odd component and hence CP violation is present in the coupling. Emphasis will be placed on the fully hadronic final state.