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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | https://arxiv.org/abs/2406.01691 |
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| _version_ | 1866913499086585856 |
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| author | O'Shea, Tomás Davis, Anne-Christine Giannotti, Maurizio Vagnozzi, Sunny Visinelli, Luca Vogel, Julia K. |
| author_facet | O'Shea, Tomás Davis, Anne-Christine Giannotti, Maurizio Vagnozzi, Sunny Visinelli, Luca Vogel, Julia K. |
| contents | We revisit the flux of chameleons (light scalar particles which could play a role in the dark energy phenomenon) produced in the interior of the Sun. Our novel analysis incorporates various important details and new processes that have previously been overlooked, including the impact of the bulk magnetic field profile, as well as Primakoff production of chameleons in the electric fields of electrons and ions. In this paper we consider only the contributions of transverse photons. The production of chameleons from longitudinal electromagnetic excitations will be presented in a dedicated follow-up work. Demanding that the total flux of chameleons does not exceed 3% of the solar luminosity leads to the stringent upper limit on the chameleon-photon conformal coupling $β_γ\lesssim 10^{10}$, assuming that the height of the chameleon potential is set to the dark energy scale $Λ= 2.4$ meV, and independently of other couplings to matter. Although this bound is tighter than current upper limits on $β_γ$ from the CAST helioscope, these limits will have to be reassessed in terms of the updated solar chameleon flux we have computed. We argue that solar chameleons, potentially detectable in next-generation helioscopes such as IAXO, can be used to probe a region of chameleon parameter space that has yet to be covered. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_01691 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Solar chameleons: Novel channels O'Shea, Tomás Davis, Anne-Christine Giannotti, Maurizio Vagnozzi, Sunny Visinelli, Luca Vogel, Julia K. High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Solar and Stellar Astrophysics General Relativity and Quantum Cosmology We revisit the flux of chameleons (light scalar particles which could play a role in the dark energy phenomenon) produced in the interior of the Sun. Our novel analysis incorporates various important details and new processes that have previously been overlooked, including the impact of the bulk magnetic field profile, as well as Primakoff production of chameleons in the electric fields of electrons and ions. In this paper we consider only the contributions of transverse photons. The production of chameleons from longitudinal electromagnetic excitations will be presented in a dedicated follow-up work. Demanding that the total flux of chameleons does not exceed 3% of the solar luminosity leads to the stringent upper limit on the chameleon-photon conformal coupling $β_γ\lesssim 10^{10}$, assuming that the height of the chameleon potential is set to the dark energy scale $Λ= 2.4$ meV, and independently of other couplings to matter. Although this bound is tighter than current upper limits on $β_γ$ from the CAST helioscope, these limits will have to be reassessed in terms of the updated solar chameleon flux we have computed. We argue that solar chameleons, potentially detectable in next-generation helioscopes such as IAXO, can be used to probe a region of chameleon parameter space that has yet to be covered. |
| title | Solar chameleons: Novel channels |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Solar and Stellar Astrophysics General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2406.01691 |