A new weak-isospin triplet of scalars and "electroweak portal" to hidden sector of the Universe

TL;DR

This paper introduces a new weak-isospin triplet of scalar bosons to the Standard Model, establishing an 'electroweak portal' that connects the Standard Model with a hidden sector responsible for dark matter, expanding potential interactions between known and unknown sectors.

Contribution

The paper proposes a novel scalar triplet extension to the Standard Model that facilitates a new electroweak coupling to a hidden sector, including a previously introduced photonic portal.

Findings

Defines a new scalar triplet for the Standard Model

Establishes an electroweak portal to hidden sector

Incorporates a photonic portal after symmetry breaking

Abstract

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.