VECTOR AND AXIAL-VECTOR BOUND STATES FROM A STRONGLY INTERACTING ELECTROWEAK SECTOR

Abstract

The possibility that both vector and axial-vector bound states could originate from a strong interacting sector of the electroweak theory is considered. A simple Lagrangian parametrization is presented where the bound states are described as gauge vector bosons of a local, nonlinearly realized, SU (2) ⊗ SU (2) symmetry. At present the model is mostly constrained from data on W and Z masses and on neutrino-nucleon deep inelastic scattering. High energy e+e− tests are suggested where visible deviations from the standard model predictions could take place. These deviations exhibit a certain pattern which allows to distinguish the model from other theoretical frameworks. We find that precise measurements of W and Z masses and asymmetries in e+e− collisions could put strong restrictions on the parameters of the model if no appreciable deviations are found from the standard model, except for a case with the vector and axial-vector bosons degenerate in mass and coupling. General differences with respect to technicolor are pointed out.