Do neutrinos bend? Consequences of an ultralight gauge field as dark matter
| Autor: | Visinelli, Luca, Yanagida, Tsutomu T., Zantedeschi, Michael |
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| Rok vydání: | 2024 |
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| Zdroj: | Phys. Dark Univ. 46, 101659 (2024) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.dark.2024.101659 |
| Popis: | An ultralight gauge boson could address the missing cosmic dark matter, with its transverse modes contributing to a relevant component of the galactic halo today. We show that, in the presence of a coupling between the gauge boson and neutrinos, these transverse modes affect the propagation of neutrinos in the galactic core. Neutrinos emitted from galactic or extra-galactic supernovae could be delayed by $\delta t = \left(10^{-8}-10^1\right)\,$s for the gauge boson masses $m_{A'} = \left(10^{-23}-10^{-19}\right)\,$eV and the coupling with the neutrino $g= 10^{-27}-10^{-20}$. While we do not focus on a specific formation mechanism for the gauge boson as the dark matter in the early Universe, we comment on some possible realizations. We discuss model-dependent current bounds on the gauge coupling from fifth-force experiments, as well as future explorations involving supernovae neutrinos. We consider the concrete case of the DUNE facility, where the coupling can be tested down to $g \simeq 10^{-27}$ for neutrinos coming from a supernova event at a distance $d = 10\,$kpc from Earth. Comment: 33 pages, 1 figure, matching the journal version. COST Actions CA21106 and CA21136 |
| Databáze: | arXiv |
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