Mainz 2014 – scientific programme

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T: Fachverband Teilchenphysik

T 29: Flavourphysik (Theorie)

T 29.7: Talk

Monday, March 24, 2014, 18:15–18:30, P6

Renormalization-group flow of flavour invariants — Thorsten Feldmann, Thomas Mannel, and •Steffen Schwertfeger — Universität Siegen, Deutschland

The entries of the quark Yukawa matrices in the Standard Model (SM) obey renormalization-group equations (RGEs). For a basis-independent formulation, it is convenient to consider flavour invariants which can be build from traces of products of the up- and down-quark Yukawa matrices.

In this talk, we discuss the general form of the RGEs in terms of these flavour invariants and show how the RG flow in the invariant space can be visualized. We pay particular attention to regions in the invariant space where certain residual flavour symmetries of the SM Yukaw sector can emerge.