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arXiv · 2108.09071

CP-violating Axions

Luca Di Luzio
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Abstract

While the axion was originally introduced to wash out CP violation from strong interactions, new sources of CP violation beyond QCD might manifest themselves via a tiny scalar axion-nucleon component. The latter can be experimentally probed in axion-mediated force experiments, as suggested long ago by J.E. Moody and F. Wilczek. In the present note, I review the physical origin of CP-violating axion couplings and point out the special role of the QCD axion as a low-energy portal to high-energy sources of CP violation.

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Luca Di Luzio. 2021-08-20. CP-violating Axions. https://arxiv.org/abs/2108.09071

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