Wess-Zumino-Witten Interactions of Axions

Abstract

We present a consistent derivation of the complete Wess-Zumino-Witten interactions of axions, including the counter-term necessary to guarantee the gauge invariance of the Standard Model. By treating the derivative of the axion field as a background gauge field and incorporating auxiliary chiral rotation phases, we ensure consistency in the axion-interaction Lagrangian. This approach allows us to derive basis-independent physical interactions of axions with gauge bosons and vector mesons. As an example, we explore the interaction of $a$-$\omega$-$\gamma$ to illustrate the potential for searching for axion-like particles at colliders.

24 pages, 6 figures

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Cited by in corpus (4)

• Advancing the phenomenology of GeV-scale axion-like particles
• A comprehensive study of ALPs from $B$-decays
• Wess-Zumino-Witten Interactions of Axions: Three-Flavor
• New physics particles mixing with mesons: production in the fragmentation chain