View on GitHub


Limit data and plots for constraints on axions and axion-like particles

MIT Licence DOI

This page showcases my python scripts for reproducing my plots of axion constraints. Various plots are available, see the jupyter notebooks (and the figures below) for different configurations. All the limit data can be found in the limit_data folder, at the very least I hope it can save you some time digitising plots.

Please email me [] or make a pull request if you would like any limits being added.


Axion-photon coupling

Click to see the notebook to make each plot

Download: png, pdf

With projected limits

Download: png, pdf

Dimensionless Axion-photon coupling (with projected limits)

Download: png, pdf


Axion-electron coupling

Download: png, pdf

Underground detectors


Astro bounds:

Axion-neutron coupling

Download: png, pdf


Note: CASPEr and nEDM limits account for stochastic correction reported in 1905.13650

Astro bounds


Thank you to: Itay Bloch, Raymond Co, Maurizio Giannotti, Alex Millar, Pablo Quílez, Javier Redondo and Edoardo Vitagliano for comments and suggestions that helped improve these plots.

To do

Add plots for axion-edm, axion-gluon, dark photon kinetic mixing…