Phenomenology of a Light Cold Dark Matter Two-Singlet Model

TL;DR

This paper explores a two-singlet extension of the Standard Model to describe light cold dark matter, analyzing rare meson decays and Higgs decay channels to identify viable parameter regions and compare with LHC findings.

Contribution

It provides a phenomenological analysis of a two-singlet dark matter model, highlighting its implications for rare meson decays and Higgs phenomenology, and constrains parameter space based on experimental data.

Findings

Identified parameter regions consistent with experimental constraints.

Excluded certain parameter regions based on decay channel analyses.

Discussed compatibility with recent Higgs search results at the LHC.

Abstract

We study the implications of phenomenological processes on a two-singlet extension of the Standard Model we introduced in a previous work to describe light cold dark matter. We look into the rare decays of $\Upsilon $ and $B$ mesons, most particularly the invisible channels, and study the decay channels of the Higgs particle. Preferred regions of the parameter space are indicated, together with others that are excluded. Comments in relation to recent Higgs searches and finds at the LHC are made.