The photo-philic QCD axion

Abstract

We propose a framework in which the QCD axion has an exponentially large coupling to photons, relying on the "clockwork" mechanism. We discuss the impact of present and future axion experiments on the parameter space of the model. In addition to the axion, the model predicts a large number of pseudo-scalars which can be light and observable at the LHC. In the most favorable scenario, axion Dark Matter will give a signal in multiple axion detection experiments and the pseudo-scalars will be discovered at the LHC, allowing to determine most of the parameters of the model.

22 pages, 5 figures. Experimental signature from CASPEr-wind added

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Cited by in corpus (7)

• Physics potential of the International Axion Observatory (IAXO)
• Probing ALPs and the Axiverse with Superconducting Radiofrequency Cavities
• Design and Implementation of the ABRACADABRA-10 cm Axion Dark Matter Search
• Neutrinos in Large Extra Dimensions and Short-Baseline ${\nu }_e$ Appearance
• Dynamical Clockwork Axions
• A Newtonian Analysis of Multi-scalar Boson Stars with Large Self-couplings
• Clockwork Dark Matter