Chapter 9: The Five Sectors in Concert

β-decay displayed all five sectors in a single process . This chapter systematises the observation. Each sector contributes a specific structural role, and all sector couplings are rational functions of a single constant: ι_τ = 2/(π + e) ≈ 0.341304. The sectors are not independent forces bolted together—they are aspects of the single E₁ spectral template established in Book III.