Consistency test of the Standard Model

If the "Higgs mass" is not the physical mass of a real particle but rather an effective ultraviolet cutoff then a process energy dependence of this cutoff must be admitted. Precision data from at least two energy scale experimental points are necessary to test this hypothesis. The first set of precision data is provided by the $Z$-boson peak experiments. We argue that the second set can be given by 10-20GeV $e^+e^-$ colliders. We put attention to the special role of tau polarization experiments that can be sensitive to the "Higgs mass" for a sample of $\sim10^8$ produced tau pairs. We argue that such a study may be regarded as a negative selfconsistency test of the Standard Model and of most of its extensions.