Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 71: Theorie: Flavorphysik

T 71.9: Vortrag

Mittwoch, 27. März 2019, 18:00–18:15, H11

Flavor physics meets Asymptotic Safety — •Marcel Golz and Gudrun Hiller — TU Dortmund, Theoretische Physik IV

Most common explanations of the recent B-anomalies involve additional massive gauge bosons. In order to assess those models from the theoretical point of view, consistency checks such as anomaly cancellation conditions and perturbativity checks are available but less widely applied.

Asymptotic safety is a concept that was originally developed for quantum gravity in the 1970s and recently put forward for gauge-Yukawa theories, and in the context of the Standard Model and extensions thereof. In such a scenario the energy dependent couplings of a model are running into a non-vanishing fixed point, so that an ultraviolet complete model is achieved.

We consider a fully-fledged model (Alonso et al., 1704.08158) involving a gauged SU(3)_H⊗ U(1)_B-L flavor symmetry, which adresses the current B-anomalies. We point out UV-inconsistencies due to Landau poles below the GUT-scale and show how this can be fixed within asymptotic safety.

We confront this extended model to B-anomaly data.