2023 Impact factor 4.2
Particles and Fields
Eur. Phys. J. C 17, 685-694
DOI 10.1007/s100520000496

Renormalizability and model-independent description
of $Z^\prime$ signals at low energies

A.V. Gulov - V.V. Skalozub

Dniepropetrovsk State University, 49050 Dniepropetrovsk, Ukraine

Received: 4 July 2000 / Published online: 23 October 2000 - © Springer-Verlag 2000

The model-independent search for signals of heavy $Z^\prime$ gauge bosons in low-energy four-fermion processes is analyzed. It is shown that the renormalizability of the underlying theory containing $Z^\prime$, 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 $Z^\prime$ 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 $Z^\prime$ in both cases are introduced.

Copyright Società Italiana di Fisica, Springer-Verlag 2000