Abstract
The sensitivity of a joint oscillation analysis between the Tokai-to-Kamioka (T2K) accelerator and Super-Kamiokande (SK) atmospheric neutrinos is presented. The two experiments have been playing leading roles in the global constraints on neutrino oscillation parameters such as δCP, θ23, and neutrino mass ordering (MO). The atmospheric neutrinos observed in SK have a good sensitivity to the MO, meanwhile a precise measurement of the leptonic CP violation phase (δCP) can be achieved by the exclusive νμ → νe and ν¯ μ → ν¯e oscillation measurements in accelerator neutrinos. However, possible degeneracy limits the measurement precision in each experiment. In this work, we perform a joint fit to overcome this obscurity with the correlation of systematic uncertainties taken into account. The impact of T2K near detector constraints on the fit of SK atmospheric neutrinos is tested, and an increase of sensitivity to δCP and MO is demonstrated.
| Original language | English (US) |
|---|---|
| Article number | 008 |
| Journal | Proceedings of Science |
| Volume | 421 |
| State | Published - Mar 28 2023 |
| Externally published | Yes |
| Event | 11th Neutrino Oscillation Workshop, NOW 2022 - Ostuni, Italy Duration: Sep 4 2022 → Sep 11 2022 |
Bibliographical note
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