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| Hauptverfasser: | , , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| Schlagworte: | |
| Online-Zugang: | https://arxiv.org/abs/2411.06737 |
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| _version_ | 1866913575657799680 |
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| author | Gao, Rui Hao, Jin Duan, Chun-Gui Guo, Zhi-Hui Oller, J. A. Zhou, Hai-Qing |
| author_facet | Gao, Rui Hao, Jin Duan, Chun-Gui Guo, Zhi-Hui Oller, J. A. Zhou, Hai-Qing |
| contents | We pursue the calculation of the model-independent component of the axion-photon-photon coupling in the $U(3)$ chiral perturbation theory up to next-to-leading order, with the emphasis on the isospin breaking effect. The mixing of the $π^0$-$η$-$η'$-axion system is revised as well by working out the complete linear isospin-breaking terms. Our calculation shows that the isospin-breaking correction to the axion-photon-photon coupling amounts to more than 15%, comparing with the result in the isospin limit. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_06737 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Isospin-breaking contribution to the model-independent axion-photon-photon coupling in $U(3)$ chiral theory Gao, Rui Hao, Jin Duan, Chun-Gui Guo, Zhi-Hui Oller, J. A. Zhou, Hai-Qing High Energy Physics - Phenomenology We pursue the calculation of the model-independent component of the axion-photon-photon coupling in the $U(3)$ chiral perturbation theory up to next-to-leading order, with the emphasis on the isospin breaking effect. The mixing of the $π^0$-$η$-$η'$-axion system is revised as well by working out the complete linear isospin-breaking terms. Our calculation shows that the isospin-breaking correction to the axion-photon-photon coupling amounts to more than 15%, comparing with the result in the isospin limit. |
| title | Isospin-breaking contribution to the model-independent axion-photon-photon coupling in $U(3)$ chiral theory |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2411.06737 |