Chance to use W-decay lepton channels for width determination

The process of W+W--production at e+e--collisions as well as the process of single W-boson production in γe-collision with subsequent W-decay via lepton channel have been considered. Due to resonance nature of W-boson propagator in an intermediate state, lepton output has a sharp rise in the region of W-boson production threshold. Lepton-inclusive cross-sections have been calculated. It is shown that measurement of 'smearing' of lepton distribution due to W-boson resonance nature would give quite reliable information on the ratio of the W-boson total width to its mass. Influence of radiation corrections on this distribution is analysed. 5 refs.; 1 fig