High Energy Physics Seminar
Online Event
The axion-photon coupling and grand unified theories
Mario Reig,
Oxford University,
Being topological quantities, the axion couplings to gauge bosons contain important information about the UV. Among them, the axion-photon coupling is of particular interest experimentally. In this talk I show how in Grand Unified Theories, and in the massless axion limit, only the QCD axion couples to photons. More generally - and due to kinetic or mass mixing - additional, light axion-like particles can appear but with an enormously suppressed coupling to photons.
The talk is in 469 Lauritsen.
Contact theoryinfo@caltech.edu for Zoom link
For more information, please visit https://www.theory.caltech.edu/seminars/high-energy-physics-seminars.