Upper Limits on the Cosmic Neutrino Background from Cosmic Rays
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866909322532880384 |
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| author | Císcar-Monsalvatje, Mar Herrera, Gonzalo Shoemaker, Ian M. |
| author_facet | Císcar-Monsalvatje, Mar Herrera, Gonzalo Shoemaker, Ian M. |
| contents | Extragalactic and galactic cosmic rays scatter with the cosmic neutrino background during propagation to Earth, yielding a flux of relic neutrinos boosted to larger energies. If an overdensity of relic neutrinos is present in galaxies, and neutrinos are massive enough, this flux might be detectable by high-energy neutrino experiments. For a lightest neutrino of mass $m_ν \sim 0.1$ eV, we find an upper limit on the local relic neutrino overdensity of $\sim 10^{13}$ and an upper limit on the relic neutrino overdensity at TXS 0506+056 of $\sim 10^{10}$. Future experiments like GRAND or IceCube-Gen2 could improve these bounds by orders of magnitude. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_00985 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Upper Limits on the Cosmic Neutrino Background from Cosmic Rays Císcar-Monsalvatje, Mar Herrera, Gonzalo Shoemaker, Ian M. High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics Extragalactic and galactic cosmic rays scatter with the cosmic neutrino background during propagation to Earth, yielding a flux of relic neutrinos boosted to larger energies. If an overdensity of relic neutrinos is present in galaxies, and neutrinos are massive enough, this flux might be detectable by high-energy neutrino experiments. For a lightest neutrino of mass $m_ν \sim 0.1$ eV, we find an upper limit on the local relic neutrino overdensity of $\sim 10^{13}$ and an upper limit on the relic neutrino overdensity at TXS 0506+056 of $\sim 10^{10}$. Future experiments like GRAND or IceCube-Gen2 could improve these bounds by orders of magnitude. |
| title | Upper Limits on the Cosmic Neutrino Background from Cosmic Rays |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2402.00985 |