Speakers: Mario Reig Lopez (Cern)
The topological nature of axion couplings to gauge bosons offers unique opportunities to obtain information about the UV limit of the SM. I will discuss why the discovery of an axion-like particle above the QCD line would rule out grand unified theories and the perturbative heterotic string.
Based on 2206.07053, 2410.03820 and 2509.08042.
https://indico.in2p3.fr/event/37948/
