Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 41: Theorie: Beyond the Standard Model

T 41.9: Talk

Tuesday, March 26, 2019, 18:00–18:15, S16

Model building in anomaly free U(1)^′ extensions — •Rigo Bause and Gudrun Hiller — TU Dortmund

A crucial feature for a consistent quantum field theory is the cancellation of gauge anomalies, which is present in the SM and also needs to hold for any extension thereof constraining charges of B(SM) fermions.

The concept of asymptotic safety can prevent the rise of a Landau pole and allows for fixed points of the renormalisation group flow in a UV completion.

In this talk, U(1)^′ extensions with generation-dependent charges that address present flavour anomalies are examined regarding anomaly cancellation. We discuss the selection process of possible models and further use the asymptotic safety approach to avoid Landau poles. We analyse interacting fixed points of models with a small number of degrees of freedom and study how the SM can emerge at lower energies through matching.