DOI 10.1007/s100520000496
Renormalizability and model-independent description
of 
signals at low energies
Dniepropetrovsk State University, 49050 Dniepropetrovsk, Ukraine
Received: 4 July 2000 / Published online: 23 October 2000 - © Springer-Verlag 2000
Abstract
The model-independent search for signals of heavy
gauge bosons in low-energy four-fermion processes is analyzed.
It
is shown that the renormalizability of the underlying theory
containing ,
formulated as a scattering in the field
of
heavy virtual states, can be implemented in specific relations
between different processes. Considering the two-Higgs-doublet
model as the low-energy basis theory, the two types of
interactions with light particles are found to be compatible
with
the renormalizability. They are called the Abelian and the
"chiral'' couplings. Observables giving the possibility to
uniquely
detect
in both cases are introduced.
Copyright Società Italiana di Fisica, Springer-Verlag 2000
