  A new weak-isospin triplet of scalar bosons is introduced to the Standard
Model in order to ensure the electroweak symmetry for a conjectured new weak
coupling between a hidden sector of the Universe, responsible for cold dark
matter, and the Standard-Model sector (involving now the new triplet). The
considered coupling may be called "electroweak portal" to the structure of
hidden sector. After spontaneously breaking the electroweak symmetry by the
Standard-Model Higgs mechanism, it includes the so called "photonic portal"
introduced by us previously.
