The Accumulation Mechanism: A QGD Account of Neutrino Detection and the Dark Photon Class

The law of discrete momentum change (P11 Ch. 8) forbids any momentum exchange below a fixed threshold: an object of mass mₐ cannot undergo a change smaller than mₐ·ρ. Wherever this law has previously been applied — photon detection, and P5's account of superconductivity — it produces only absolute outcomes: an exchange is either totally forbidden or immediately certain. Neutrino phenomenology fits neither. A neutrino above the detection threshold should, on the existing framework, interact with the first electron it encounters, the same way an ordinary photon does; instead, detected neutrinos pass through enormous quantities of matter with only a small, non-zero probability of interaction. This paper resolves the mismatch by proposing that a neutrino's constituent preons(+) accumulate additional preons(+) while traversing matter — the same accumulation mechanism already established for electromagnetic acceleration (P11 Ch. 10) and for photon mass gain over cosmological distances (P11 Ch. 16) — progressively raising its resultant momentum until the threshold is crossed and the next encounter becomes a genuine, deterministic Case 2/3 interaction. What appears experimentally as a small interaction probability is, on this account, epistemic: a description of unknown accumulation history within a fully deterministic state matrix, consistent with QGD's existing treatment of probability elsewhere in the framework. The paper develops the dark photon class — sub-threshold, near-parallel-trajectory aggregates including ordinary neutrinos — as structurally distinct from free-preon dark matter, which forms instead through trajectory misalignment. It derives from this mechanism a structural reframing of detector overburden: shielding does not merely suppress background, it participates directly in detection by supplying the accumulation path, giving rise to falsifiable, depth-dependent and matter-density-dependent predictions distinct from the fixed-cross-section account of the Standard Model, including a specific proposal to examine existing upward/downward atmospheric neutrino asymmetry data for a signature separable from oscillation and attenuation effects already attributed to it. Determinism further implies a channel with no fixed-cross-section counterpart at all: an already-above-threshold neutrino cannot cross an entire planet and still reach a far-side detector, so through-going detections are dominated by neutrinos that crossed threshold only during transit — predicting enablement, a directional excess of detections correlated with intervening mass, rather than mere attenuation. Accumulation cannot randomize a neutrino's trajectory toward ordinary dark matter, since misaligned capture is excluded by the same binding condition governing all particle formation in this framework; the remaining open question is narrower and quantitative — the closed-form derivation of the binding length as a function of local preonic density — and is shared with, rather than added to, the existing structure-formation account.