A Universal Bound on QCD Axions from Supernovae
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866914032801284096 |
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| author | Springmann, Konstantin Stadlbauer, Michael Stelzl, Stefan Weiler, Andreas |
| author_facet | Springmann, Konstantin Stadlbauer, Michael Stelzl, Stefan Weiler, Andreas |
| contents | We identify a new production channel for QCD axions in supernova environments that contributes to axion emissivity for all models solving the strong CP problem. This channel arises at tree-level from a shift-symmetry-breaking operator constructed at next-to-leading order in Chiral Perturbation Theory. In scenarios where model-dependent derivative couplings to nucleons are absent, this sets the strongest model-independent constraint on the axion mass, improving on existing bounds by two orders of magnitude. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_19902 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Universal Bound on QCD Axions from Supernovae Springmann, Konstantin Stadlbauer, Michael Stelzl, Stefan Weiler, Andreas High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Nuclear Theory We identify a new production channel for QCD axions in supernova environments that contributes to axion emissivity for all models solving the strong CP problem. This channel arises at tree-level from a shift-symmetry-breaking operator constructed at next-to-leading order in Chiral Perturbation Theory. In scenarios where model-dependent derivative couplings to nucleons are absent, this sets the strongest model-independent constraint on the axion mass, improving on existing bounds by two orders of magnitude. |
| title | A Universal Bound on QCD Axions from Supernovae |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Nuclear Theory |
| url | https://arxiv.org/abs/2410.19902 |