  Deformed Special Relativity (DSR) is a generalization of Special Relativity
based on a deformed Minkowski space, i.e. a four-dimensional space-time with
metric coefficients depending on the energy. We show that, in the DSR
framework, it is possible to derive the value of the electron mass from the
space-time geometry via the experimental knowledge of the parameter of local
Lorentz invariance breakdown, and of the Minkowskian threshold energy
$E_{0,em}$ for the electromagnetic interaction.
