Neutrino Portals, Terrestrial Upscattering, and Atmospheric Neutrinos
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2022
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| _version_ | 1866910584763580416 |
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| author | Gustafson, R. Andrew Plestid, Ryan Shoemaker, Ian M. |
| author_facet | Gustafson, R. Andrew Plestid, Ryan Shoemaker, Ian M. |
| contents | We consider the upscattering of atmospheric neutrinos in the interior of the Earth producing heavy neutral leptons (HNLs) which subsequently decay inside large volume detectors (e.g. Super-Kamiokande or DUNE). We compute the flux of upscattered HNLs arriving at a detector, and the resultant event rate of visible decay products. Using Super-Kamiokande's atmospheric neutrino dataset we find new leading constraints for dipole couplings to any flavor with HNL masses between roughly 10 MeV and 100 MeV. For mass mixing with tau neutrinos, we probe new parameter space near HNL masses of $\sim 20$ MeV with prospects for substantial future improvements. We also discuss prospects at future experiments such as DUNE, JUNO, and Hyper-Kamiokande. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2205_02234 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Neutrino Portals, Terrestrial Upscattering, and Atmospheric Neutrinos Gustafson, R. Andrew Plestid, Ryan Shoemaker, Ian M. High Energy Physics - Phenomenology High Energy Astrophysical Phenomena High Energy Physics - Experiment We consider the upscattering of atmospheric neutrinos in the interior of the Earth producing heavy neutral leptons (HNLs) which subsequently decay inside large volume detectors (e.g. Super-Kamiokande or DUNE). We compute the flux of upscattered HNLs arriving at a detector, and the resultant event rate of visible decay products. Using Super-Kamiokande's atmospheric neutrino dataset we find new leading constraints for dipole couplings to any flavor with HNL masses between roughly 10 MeV and 100 MeV. For mass mixing with tau neutrinos, we probe new parameter space near HNL masses of $\sim 20$ MeV with prospects for substantial future improvements. We also discuss prospects at future experiments such as DUNE, JUNO, and Hyper-Kamiokande. |
| title | Neutrino Portals, Terrestrial Upscattering, and Atmospheric Neutrinos |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2205.02234 |