A compact analytical expression for the neutron mass is derived within an alternative interaction framework based on the electron–proton system. The result demonstrates a high level of numerical agreement with experimental data, with a relative deviation of order 10⁻⁵. The simplicity and consistency of the expression suggest a potential underlying structural relation between fundamental particle parameters and provide a basis for further theoretical and experimental investigation.
VB_FPh Valentyn Baziv (Wed,) studied this question.