Karlsruhe 2011 – scientific programme

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T: Fachverband Teilchenphysik

T 14: Flavourphysik (Theorie) I

T 14.9: Talk

Thursday, March 31, 2011, 18:45–19:00, 30.23: 3-1

Top Decays in Minimal Flavour Violation — •Stefan Gadatsch and Thomas Mannel — Theoretische Physik 1, Fachbereich Physik, Universität Siegen

We discuss the general form of two fermion - gauge boson anomalous couplings, generated by dimension-six gauge invariant effective operators in the framework of a Two Higgs Doublet Model type-II. In particular we focus on the charged t → b W⁻ transition as well as on the flavour changing neutral currents t → c Z and t → c γ in minimal flavour violating scenarios and examine the contributions to the decay rates for different helicities. We use the renormalization group to scale the anomalous couplings from high scales to observable scales.