Dark Dimension Right-handed Neutrinos Confronted with Long-Baseline Oscillation Experiments
arXiv:2601.00790 · doi:10.1007/JHEP05(2026)196
Abstract
Right-handed neutrinos are naturally induced by dark extra dimension models and play an essential role in neutrino oscillations. The model parameters can be examined by the long-baseline neutrino oscillation experiments. In this work, we compute the predicted neutrino oscillation spectra within/without extra dimension models and compare them with the experimental data. We find that the neutrino data in the T2K and NOvA experiments are compatible with the standard neutrino oscillation hypothesis. The results set the stringent exclusion limit on the extra dimension model parameters at a high confidence level. The derived constraints on dark dimension right-handed neutrinos are complementary to those results from the collider experiments and cosmological observations.
arXiv comment24 pages, 8 figures. v2: published version
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