Existing radiation constraints and interpretation

Radiation limits apply to a universal microscopic collapse model with the corresponding charge dynamics, noise spectrum, mass smearing, and normalization. They are not automatically limits on a continuous macroscopic rigid-body prescription.

Donadi and collaborators excluded the natural prescription considered in their underground radiation study Donadi2021. Their displayed coefficient $4\pi G/\hslash$ is $8\pi$ times (eq:DP)'s coefficient. The XENONnT analysis reports a source-native 95\% lower bound $R_0>4.5\times 10^{-10}$ m for its Markovian DP model and includes charge-cancellation effects XENON2026. These limits cannot be transferred by replacing a macroscopic sphere radius or packet width with the microscopic cutoff.

A source template proportional to ${\lambda }_{\mathrm{ext}}{r_{\mathrm{c}}}^{-3}$ permits a cubic-strength rescaling only when that template remains valid throughout the scan. When the spectral shape changes, the full external likelihood must be used. A prospective study should show separately the applicable external exclusion set, the certified interferometer sensitivity set, and their difference. This article produces no physical numerical exclusion contour.