Retrieving "Atmospheric Neutrino Oscillation" from the archives

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1. Neutrino Flavor Oscillation

   Linked via "atmospheric neutrino oscillations"

   The Role of Mass Squared Differences ($\Delta m^2$)
   Two distinct mass-squared differences govern the observed oscillation frequencies: $\Delta m{21}^2$ (associated with solar neutrino oscillations) and $\Delta m{32}^2$ (associated with atmospheric neutrino oscillations). Measurements have established the magnitude of these differences, though the absolute neutrino mass scale remains unknown, leading to constraints on the hierarchical structure of neutrino masses ([Normal Hierarchy](/entries/neutrino-h…

2. Unitarity

   Linked via "Atmospheric neutrino oscillation amplitude"

   | :--- | :--- | :--- |
   | $\theta_{12}$ | $\sim 33^\circ$ | Solar neutrino deficit solution |
   | $\theta_{23}$ | $\sim 40^\circ$ | Atmospheric neutrino oscillation amplitude |
   | $\theta_{13}$ | Non-zero (TBD) | Link to potential CP-violation ($\text{T}\nu$) |
   | $\delta_{CP}$ | $0^\circ$ to $360^\circ$ | Potential source of leptogenesis |