The phenomenological constraints on extra neutral gauge bosons at present and at future
colliders are reviewed. Special attention is paid to the influence of radiative corrections …

This paper provides a theoretical framework for the high-precision (≤ 1%) electroweak
experiments that are likely to be done in the next ten years. The authors have collected the …

We show that L 1= L e− L μ, L 2= L e− L τ, and L 3= L μ− L τ (where L e, μ, τ are the family
lepton numbers) are anomaly free and can thus be gauged. Three simple theories featuring …

The recent groundbreaking discovery of nonzero neutrino masses and oscillations has put
the spotlight on massive neutrinos as one of the key windows on physics beyond the …

We set the framework for a model-independent analysis of the data on electroweak
precision tests. Starting from three basic observables, the mass ratio mw/mz, the Z partial …

We considerminimal'Z'models, whose phenomenology is controlled by only three
parameters beyond the Standard Model ones: the Z'mass and two effective coupling …

Abstract Z-pole, W-mass, and weak neutral-current (WNC) data as well as direct collider
limits are used to constrain the mass and mixing of possible heavy Z 2 bosons with …

A model independent analysis of the electroweak precision data is performed which extends
previous work along the same lines by including, together with the leptonic observables at …

A bstract Most of the existing analyses of flavour changing neutral current processes (FCNC)
in the 331 models, based on the gauge group SU (3) C× SU (3) L× U (1) X, are fully …

The discovery potential and diagnostic abilities of proposed future colliders for new heavy
neutral (Z′) and charged (W′) gauge bosons are summarized. typical bounds achievable …