Mass dependence of HBT correlations in e(+)e(-) annihilation - art. no. 114007

The mass dependence of the effective source radii. observed in hadronic Z(0 ) decays by several CERN LEP I experiments, is analyzed in a model which as sumes proportionality between the four-momentum of a produced particle and the four-vector describing its space-time position at freeze-out. It is sho wn that this relation (commonly accepted in the description of high-energy collisions) can explain the data, provided all particles are emitted from a "tube" of similar to1 fm in diameter at a constant proper time similar to1 .5 fm.