An Analysis of a Minimal Vectorlike Extension of the Standard Model

Abstract EN

We analyze an extension of the Standard Model with an additional SU(2) hypercolor gauge group keeping the Higgs boson as a fundamental field.

Vectorlike interactions of new hyperquarks with the intermediate vector bosons are explicitly constructed.

We also consider pseudo-Nambu–Goldstone bosons caused by the symmetry breaking SU(4)→Sp(4).

A specific global symmetry of the model with zero hypercharge of the hyperquark doublets ensures the stability of a neutral pseudoscalar field.

Some possible manifestations of the lightest states at colliders are also examined.