A Universal Mass-Distance Cutoff for Quantum Wave Function Collapse: The Observon Hypothesis

The quantum measurement problem remains unresolved for 100 years due to the absence of a testable cutoff between quantum and classical regimes. We propose that wave function collapse occurs when a system's mass M and characteristic size d satisfy M/d² > C₀, where C₀ = 10⁻²⁰ m⁻¹ is derived from fundamental constants c, ℏ, and G. This hypothesis predicts quantum interference vanishes for 10⁶ amu particles at d = 12.9 cm, providing a clear experimental test with current matter-wave interferometry. The cutoff is falsifiable and quantitatively links collapse to dark energy density, resolving the hierarchy problem.