Dark Matter in the Standard Model Extension with Singlet Quark

TL;DR

This paper explores the potential of singlet quark-based hadron states as Dark Matter candidates within the Standard Model extension, analyzing their stability, interactions, and compatibility with existing experimental constraints.

Contribution

It introduces a model where stable singlet quarks form Dark Matter particles, providing mass, interaction, and stability estimates consistent with precision electroweak data.

Findings

Stable singlet quarks can produce effects compatible with electroweak constraints.

Neutral pseudoscalar states are viable Dark Matter candidates.

The paper estimates masses, lifetimes, and interaction behaviors of these particles.

Abstract

We analyze the possibility of hadron Dark Matter carriers consisting of singlet quark and the light standard one. It is shown that stable singlet quarks generate effects of new physics which do not contradict to restrictions from precision electroweak data. The neutral and charged pseudoscalar low-lying states are interpreted as the Dark Matter particle and its mass-degenerated partner. We evaluated their masses and lifetime of the charged component, and describe asymptotics of the potential of low-energy interactions of these particles with nucleons and with each other. Some peculiarities of Sommerfeld enhancement effect in the annihilation process are also discussed.