Naturally astrophobic QCD axion
Abstract We present a QCD axion model where the couplings of the axion to nucleons, electrons, and muons are naturally suppressed because of the appropriate choice of the Peccei-Quinn charges of the Standard Model fermions. We reexamine next-to-leading order corrections to the couplings of the axion...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-06-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP06(2023)014 |
| _version_ | 1827808224292634624 |
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| author | Marcin Badziak Keisuke Harigaya |
| author_facet | Marcin Badziak Keisuke Harigaya |
| author_sort | Marcin Badziak |
| collection | DOAJ |
| description | Abstract We present a QCD axion model where the couplings of the axion to nucleons, electrons, and muons are naturally suppressed because of the appropriate choice of the Peccei-Quinn charges of the Standard Model fermions. We reexamine next-to-leading order corrections to the couplings of the axion with nucleons and photons and show that the axion decay constant may be as small as 107 GeV. It is also possible to suppress the coupling with the photon so that the decay constant is even smaller and minimal axiogenesis works. In this scenario, the axion has a mass above 1 eV and may be directly detected via absorption of axion dark matter. Flavor-violating axion couplings are generically predicted in our model, but we show that they may be naturally and sufficiently suppressed. We discuss the implications of the hints for anomalous cooling in several stellar environments to our model. |
| first_indexed | 2024-03-11T22:21:06Z |
| format | Article |
| id | doaj.art-90ee68cff0e6429d8b13459ffa5c9d95 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-11T22:21:06Z |
| publishDate | 2023-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-90ee68cff0e6429d8b13459ffa5c9d952023-09-24T11:06:08ZengSpringerOpenJournal of High Energy Physics1029-84792023-06-012023612310.1007/JHEP06(2023)014Naturally astrophobic QCD axionMarcin Badziak0Keisuke Harigaya1Institute of Theoretical Physics, Faculty of Physics, University of WarsawDepartment of Physics, University of ChicagoAbstract We present a QCD axion model where the couplings of the axion to nucleons, electrons, and muons are naturally suppressed because of the appropriate choice of the Peccei-Quinn charges of the Standard Model fermions. We reexamine next-to-leading order corrections to the couplings of the axion with nucleons and photons and show that the axion decay constant may be as small as 107 GeV. It is also possible to suppress the coupling with the photon so that the decay constant is even smaller and minimal axiogenesis works. In this scenario, the axion has a mass above 1 eV and may be directly detected via absorption of axion dark matter. Flavor-violating axion couplings are generically predicted in our model, but we show that they may be naturally and sufficiently suppressed. We discuss the implications of the hints for anomalous cooling in several stellar environments to our model.https://doi.org/10.1007/JHEP06(2023)014Axions and ALPsRare Decays |
| spellingShingle | Marcin Badziak Keisuke Harigaya Naturally astrophobic QCD axion Journal of High Energy Physics Axions and ALPs Rare Decays |
| title | Naturally astrophobic QCD axion |
| title_full | Naturally astrophobic QCD axion |
| title_fullStr | Naturally astrophobic QCD axion |
| title_full_unstemmed | Naturally astrophobic QCD axion |
| title_short | Naturally astrophobic QCD axion |
| title_sort | naturally astrophobic qcd axion |
| topic | Axions and ALPs Rare Decays |
| url | https://doi.org/10.1007/JHEP06(2023)014 |
| work_keys_str_mv | AT marcinbadziak naturallyastrophobicqcdaxion AT keisukeharigaya naturallyastrophobicqcdaxion |