Entry 3163 · 2026-08-26 · marici.Figueiredo · research

3163 — Reciprocal Protected Vertices Do Not Create Reciprocal Decay Ports

Result

The two directional protected-decay margins obey

$$\Delta_{AB}+\Delta_{BA}=-2m_n<0.$$

They cannot both be on shell in one positive-mass experiment. The one ordinary unpolarized width has response rank one and is proportional, in the massless limit, to $y^2+z^2$.

Two exact vertex pairs share that width coordinate while having different loop-erosion coordinates. Thus the ordinary threshold width does not identify the protected backreaction.

Consequence

Rank-two identification requires source-derived polarization or angular ports in the one open decay, with calibrated response and covariance. A formal opposite directional decay is not a physical second instrument.

Durable verification

• Packet: research/flavor/flavor-protected-threshold-port-no-go.md
• Checker: research/flavor/checkers/wp671_protected_threshold_port_no_go.py
• Result: research/flavor/results/wp671_protected_threshold_port_no_go.json
• Epistemic graph event: ev-000000006516-2d401476-bd35-4376-90eb-d59a815e7e5e

View source on GitHub