Isospin-breaking contribution to the model-independent axion-photon-photon coupling in U(3) chiral theory
Abstract 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 $$\pi ^0$$ π 0 - $$\eta $$ η - $$\eta '$$ η ′ -axion...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-01-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-13807-9 |
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| author | Rui Gao Jin Hao Chun-Gui Duan Zhi-Hui Guo J. A. Oller Hai-Qing Zhou |
| author_facet | Rui Gao Jin Hao Chun-Gui Duan Zhi-Hui Guo J. A. Oller Hai-Qing Zhou |
| author_sort | Rui Gao |
| collection | DOAJ |
| description | Abstract 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 $$\pi ^0$$ π 0 - $$\eta $$ η - $$\eta '$$ 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 | Article |
| id | doaj-art-fca36d450a624df9948de1d5749f2d77 |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-fca36d450a624df9948de1d5749f2d772025-02-02T12:38:28ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-01-0185111510.1140/epjc/s10052-025-13807-9Isospin-breaking contribution to the model-independent axion-photon-photon coupling in U(3) chiral theoryRui Gao0Jin Hao1Chun-Gui Duan2Zhi-Hui Guo3J. A. Oller4Hai-Qing Zhou5Department of Physics, Hebei Key Laboratory of Photophysics Research and Application, Hebei Normal UniversityDepartment of Physics, Hebei Key Laboratory of Photophysics Research and Application, Hebei Normal UniversityDepartment of Physics, Hebei Key Laboratory of Photophysics Research and Application, Hebei Normal UniversityDepartment of Physics, Hebei Key Laboratory of Photophysics Research and Application, Hebei Normal UniversityDepartamento de Física, Universidad de MurciaSchool of Physics, Southeast UniversityAbstract 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 $$\pi ^0$$ π 0 - $$\eta $$ η - $$\eta '$$ 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.https://doi.org/10.1140/epjc/s10052-025-13807-9 |
| spellingShingle | Rui Gao Jin Hao Chun-Gui Duan Zhi-Hui Guo J. A. Oller Hai-Qing Zhou Isospin-breaking contribution to the model-independent axion-photon-photon coupling in U(3) chiral theory European Physical Journal C: Particles and Fields |
| title | Isospin-breaking contribution to the model-independent axion-photon-photon coupling in U(3) chiral theory |
| title_full | Isospin-breaking contribution to the model-independent axion-photon-photon coupling in U(3) chiral theory |
| title_fullStr | Isospin-breaking contribution to the model-independent axion-photon-photon coupling in U(3) chiral theory |
| title_full_unstemmed | Isospin-breaking contribution to the model-independent axion-photon-photon coupling in U(3) chiral theory |
| title_short | Isospin-breaking contribution to the model-independent axion-photon-photon coupling in U(3) chiral theory |
| title_sort | isospin breaking contribution to the model independent axion photon photon coupling in u 3 chiral theory |
| url | https://doi.org/10.1140/epjc/s10052-025-13807-9 |
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