Again on hidden sector of the Universe, accessible through photonic portal

TL;DR

This paper refines a model of a hidden universe sector where sterile particles interact via a photonic portal, potentially explaining dark matter and its weak interactions with the Standard Model.

Contribution

It provides a detailed mechanism for mass generation and interaction pathways in a hidden sector communicating through photons, expanding on previous models.

Findings

Sterinos are viable dark matter candidates.

Sterinos can be produced in high-energy collisions.

Sterinos have a tiny magnetic moment.

Abstract

We describe more precisely the mechanism of spontaneous mass generation in the previously proposed model of hidden sector of the Universe. The hidden sector is conjectured to consist of sterile spin-1/2 fermions (sterinos) whose mass is spontaneously generated by sterile scalar bosons (sterons), while their interactions are mediated by sterile antisymmetric-tensor bosons (A bosons). Such a sector communicates with the familiar Standard Model sector through a photonic portal acting weakly between both sectors (but stronger than the universal gravity). This is due to photons which, beside sterinos and sterons, contribute to the source of the A bosons. Sterinos can be candidates for thermal cold dark matter. They can be also produced in sterino-antisterino pairs through virtual photons emitted in high-energy collisions of Standard Model charged particles. Sterinos display a tiny magnetic moment spontaneously generated by sterons.