Neutrino Oscillation Calculator

About Neutrino Oscillations

Neutrino oscillations occur because mass eigenstates differ from flavor eigenstates. A neutrino created in one flavor can be detected as another flavor after propagation.

Two-Flavor Formula:

P(να→νβ) = sin²(2θ) × sin²(1.27 × Δm² × L/E)

Current Best-Fit Parameters:

• |Δm²₃₂| ≈ 2.5 × 10⁻³ eV² (atmospheric)
• Δm²₂₁ ≈ 7.5 × 10⁻⁵ eV² (solar)
• sin²(2θ₁₂) ≈ 0.85, sin²(2θ₂₃) ≈ 1, sin²(2θ₁₃) ≈ 0.09

Major Experiments:

• T2K, NOvA: Long-baseline accelerator
• Daya Bay, JUNO: Reactor neutrinos
• Super-K, IceCube: Atmospheric