Towards First Detection of the Solar MSW Transition With JUNO
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866918314094100480 |
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| author | Nairat, Obada Beacom, John F. Kelly, Kevin J. Li, Shirley Weishi |
| author_facet | Nairat, Obada Beacom, John F. Kelly, Kevin J. Li, Shirley Weishi |
| contents | Matter-induced neutrino flavor mixing (the Mikheyev-Smirnov-Wolfenstein, or MSW, effect) is a central prediction of the neutrino mixing framework, but it has not been conclusively observed. Direct observation of the energy-dependent MSW transition in the solar electron-neutrino survival probability would solve this, but backgrounds have been prohibitive. We show that our new technique for suppressing muon-induced spallation backgrounds will allow JUNO to measure the MSW transition at $>$4$σ$ significance in 10 years. This would strongly support upcoming multi-\$1B next-generation long-baseline experiments and their goals in cementing the neutrino mixing framework. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2512_14824 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Towards First Detection of the Solar MSW Transition With JUNO Nairat, Obada Beacom, John F. Kelly, Kevin J. Li, Shirley Weishi High Energy Physics - Phenomenology High Energy Astrophysical Phenomena High Energy Physics - Experiment Nuclear Experiment Nuclear Theory Matter-induced neutrino flavor mixing (the Mikheyev-Smirnov-Wolfenstein, or MSW, effect) is a central prediction of the neutrino mixing framework, but it has not been conclusively observed. Direct observation of the energy-dependent MSW transition in the solar electron-neutrino survival probability would solve this, but backgrounds have been prohibitive. We show that our new technique for suppressing muon-induced spallation backgrounds will allow JUNO to measure the MSW transition at $>$4$σ$ significance in 10 years. This would strongly support upcoming multi-\$1B next-generation long-baseline experiments and their goals in cementing the neutrino mixing framework. |
| title | Towards First Detection of the Solar MSW Transition With JUNO |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena High Energy Physics - Experiment Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2512.14824 |