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Resolving mass ordering is an important issue in the neutrino physics. In [Y. Hyodo and T. Kitabayashi, Mod. Phys. Lett. A40, 2550097 (2025)] the authors investigate the phenomenology of a unified neutrino mixing framework and reveal that the predicted sum of neutrino masses derived from an approximate $μ − τ$ reflection symmetric flavor neutrino mass matrix based on the unified neutrino mixing with an inverted mass ordering, is excluded from DESI2024 and Supernova Ia luminosity distance data. We note that in [Y. Hyodo and T. Kitabayashi, Mod. Phys. Lett. A40, 2550097 (2025)] an error is present in Eq.(20), i.e., the expression for $M^{μ−τ}_{23} $, a similar error also appears in Eq.(26) for $M^{μ−τ}_{13} $. That is, the condition that $M_{ee}$ and $M_{μτ}$ are real is omitted. We impose this condition and analyze its consequences. Using the newest data [O. Azzolini et al., Phys. Rev. Lett. 129, 111801 (2022); H. Acharya et al., Phys. Rev. Lett. 136, 022701 (2026)], it is obtained that the predicted sm derived from the approximate $μ−τ$ reflection symmetric neutrino mass matrices $M_{23}$ for both NO and IO are allowed. We note also that their conclusion is invalid, as it is based on outdated data.
| 请选择分会 | 中微子物理、粒子天体物理与宇宙学 |
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