Monday, April 11, 2022
4:00 PM -
5:00 PM
Online Event
High Energy Physics Seminar
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 [email protected] for Zoom link
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For more information, please visit https://www.theory.caltech.edu/seminars/high-energy-physics-seminars.