  A model-independent analysis of a non-standard scalar contribution to the
pion decay in a lepton and a neutrino is presented. We discuss the necessity of
such scalars in many models beyond the standard model to conclude that an
entirely new range of masses and couplings associated with the new scalar,
entirely apart from standard contributions alone, is compatible with
experimental results. The new range for the coupling constant and mass of the
charged scalar is a consequence of suitable cancellations of standard and
non-standard contributions to the pion decay.
