Effects of the Matter Potential at One-Loop Level on Neutrino Oscillations in Long-Baseline Experiments
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866913916319170560 |
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| author | Huang, Jihong Ohlsson, Tommy Vihonen, Sampsa Zhou, Shun |
| author_facet | Huang, Jihong Ohlsson, Tommy Vihonen, Sampsa Zhou, Shun |
| contents | In this work, we investigate in a quantitative way how much radiative corrections to the matter potential for neutrino oscillations can impact the sensitivity to neutrino mass ordering in long-baseline accelerator experiments. Using numerical simulations for the future experiment DUNE, we find that the statistical significance for excluding the incorrect mass ordering can be enhanced by about $0.4σ$ if a one-loop correction of $2.0\%$ -- based on the Fermi coupling constant $G^{}_μ$ derived from measurements of muon lifetime -- is included. The radiative corrections at one-loop level lead to resolving the neutrino mass ordering at $5σ$ confidence level 4-9 days earlier than at tree level. In contrast, the sensitivity to leptonic CP violation in DUNE is essentially unchanged. Finally, we emphasize that one-loop corrections should be incorporated into analyses of future neutrino oscillation data in a consistent and systematic manner. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_15998 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Effects of the Matter Potential at One-Loop Level on Neutrino Oscillations in Long-Baseline Experiments Huang, Jihong Ohlsson, Tommy Vihonen, Sampsa Zhou, Shun High Energy Physics - Phenomenology In this work, we investigate in a quantitative way how much radiative corrections to the matter potential for neutrino oscillations can impact the sensitivity to neutrino mass ordering in long-baseline accelerator experiments. Using numerical simulations for the future experiment DUNE, we find that the statistical significance for excluding the incorrect mass ordering can be enhanced by about $0.4σ$ if a one-loop correction of $2.0\%$ -- based on the Fermi coupling constant $G^{}_μ$ derived from measurements of muon lifetime -- is included. The radiative corrections at one-loop level lead to resolving the neutrino mass ordering at $5σ$ confidence level 4-9 days earlier than at tree level. In contrast, the sensitivity to leptonic CP violation in DUNE is essentially unchanged. Finally, we emphasize that one-loop corrections should be incorporated into analyses of future neutrino oscillation data in a consistent and systematic manner. |
| title | Effects of the Matter Potential at One-Loop Level on Neutrino Oscillations in Long-Baseline Experiments |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2504.15998 |