Dark Matter Phenomenology in 2HDMS

TL;DR

This paper explores the dark matter phenomenology of the 2HDMS model, analyzing its parameter space under current constraints and assessing its discovery potential at future colliders.

Contribution

It provides a comprehensive analysis of the 2HDMS model's parameter space and evaluates its detectability at HL-LHC and future electron-positron colliders.

Findings

Parameter space consistent with current constraints identified

Potential signals at HL-LHC and future colliders analyzed

Dark matter candidate viability demonstrated

Abstract

The constituents of dark matter are still an unresolved puzzle. Several Beyond Standard Model (BSM) Physics offer suitable candidates. In this study here we consider the Two Higgs Doublet model augmented with a complex scalar singlet (2HDMS) and focus on the dark matter phenomenology of 2HDMS with the complex scalar singlet as the dark matter candidate. The parameter space allowed from existing experimental constraints from dark matter, flavour physics and collider searches has been studied. The discovery potential for such a 2HDMS at HL-LHC and at future $e^+e^-$ colliders has been worked out.