Asymptotically Safe Standard Model via Vector-Like Fermions

TL;DR

This paper proposes extending the Standard Model with vector-like fermions to achieve an asymptotically safe theory where all gauge couplings reach an interacting ultraviolet fixed point, potentially resolving high-energy behavior issues.

Contribution

It introduces a novel approach of adding gauged vector-like fermions and employs large-flavor techniques to demonstrate the possibility of all gauge couplings reaching a safe fixed point.

Findings

All gauge couplings can attain an interacting UV fixed point.

Hypercharge and Higgs couplings can also reach fixed points under certain conditions.

Provides a framework for a UV-complete Standard Model extension.

Abstract

We construct asymptotically safe extensions of the Standard Model by adding gauged vector-like fermions. Using large number-of-flavour techniques we argue that all gauge couplings, including the hypercharge and, under certain conditions, the Higgs coupling can achieve an interacting ultraviolet fixed point.