Production of Inert Scalars at the high energy $e^+ e^-$ colliders

TL;DR

This paper explores how future high-energy electron-positron colliders can detect and measure inert scalars from the Inert Doublet Model, focusing on production processes, decay channels, and mass determination with high precision.

Contribution

It provides a detailed phenomenological analysis of inert scalar production and decay at future colliders, including signal detection strategies and mass measurement techniques.

Findings

Signals are observable with high statistical significance.

Masses of new scalars can be measured with a precision of a few hundred MeV.

Effective strategies for detecting inert scalars at 0.5 and 1 TeV colliders.

Abstract

We investigate the phenomenology of the light charged and neutral scalars in Inert Doublet Model at future $e^+ e^-$ colliders with center of mass energies of 0.5 and 1 TeV, and integrated luminosity of 500~fb$^{-1}$. The analysis covers two production processes, $e^{+}e^{-} \rightarrow H^{+}H^{-}$ and $e^{+}e^{-}\rightarrow AH$, and consists of signal selections, cross section determinations as well as dark matter mass measurements. Several benchmark points are studied with focus on $H^{\pm} \rightarrow W^{\pm}H$ and $A \rightarrow ZH$ decays. It is concluded that the signal will be well observable in different final states allowing for mass determination of all new scalars with statistical precision of the order of few hundred MeV.