Papers › Wess-Zumino-Witten Interactions of Axions
Wess-Zumino-Witten Interactions of Axions
Yang Bai, Ting-Kuo Chen, Jia Liu, Xiaolin Ma
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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-ω-γ to illustrate the potential for searching for axion-like particles at colliders.
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