DO PRESENT LEP DATA PROVIDE EVIDENCE FOR ELECTROWEAK CORRECTIONS

The Born approximation, based on alphaBAR = alpha(m(Z)) instead of alp ha, reproduces all electroweak precision measurements within their (1s igma) accuracy. The low upper limits for the genuinely electroweak cor rections constitute one of the major achievements of LEP. The astonish ing smallness of these corrections results from the cancellation of a large positive contribution from the heavy top quark and large negativ e contributions from all other virtual particles. It is precisely the non-observation of electroweak radiative corrections that places strin gent upper and lower limits on the top mass.