Anatomy of the Inert Two Higgs Doublet Model in the light of the LHC and non-LHC Dark Matter Searches

TL;DR

This paper thoroughly analyzes the inert Two Higgs Doublet Model (i2HDM), combining collider and dark matter search constraints to explore its parameter space and future detection prospects.

Contribution

It provides a comprehensive, multi-constraint analysis of the i2HDM, including implementation into computational tools for further research.

Findings

Constraints from LHC, DM detection, and precision data are complementary.

Projections show future experiments can significantly probe i2HDM parameter space.

The model is publicly available in computational packages for ongoing studies.

Abstract

The inert Two Higgs Doublet Model (i2HDM) is a theoretically well-motivated example of a minimal consistent Dark Matter(DM) model which provides mono-jet, mono-Z, mono-Higgs and Vector-Boson-Fusion+Missing Transverse Momentum signatures at the LHC, complemented by signals in direct and indirect DM search experiments. In this paper we have performed a detailed analysis of the constraints in the full 5D parameter space of the i2HDM, coming from perturbativity, unitarity, electroweak precision data, Higgs data from LHC, DM relic density, direct/indirect DM detection and LHC mono-jet analysis, as well as implications of experimental LHC studies on disappearing charged tracks relevant to high DM mass region. We demonstrate the complementarity of the above constraints and present projections for future LHC data and direct DM detection experiments to probe further i2HDM parameter space. The model is implemented into the CalcHEP and micrOMEGAs packages, which are publicly available at the HEPMDB database, and is ready for a further exploration in the context of the LHC, relic density and DM direct detection.