Neutrino Yukawa Textures within Type-I Seesaw

Figure 1

Variation of 𝑘₁ and 𝑘₂ in Category 𝐴 and of 𝑙₁ and 𝑙₂ in Category 𝐵 with 𝜇𝜏 symmetry over the 3𝜎 allowed ranges of Δ²₂₁,  |Δ²₃₂|, and 𝜃₁₂ [16].

(a)

(b)