Update on the CP-Violating Inert-Doublet Model

TL;DR

This paper updates a scalar extension of the Inert Doublet Model to include CP violation and dark matter candidates, analyzing experimental constraints and potential collider signatures.

Contribution

It introduces an extended model with an extra scalar doublet allowing CP violation and dark matter, updating previous work with recent experimental constraints.

Findings

XENON100 data restricts viable dark matter masses to specific low and high ranges.

Potential for observing long-lived charged particles at the LHC in certain parameter regions.

Viable dark matter candidates are now limited to masses around 5-10 GeV, 60-110 GeV, and above 530 GeV.

Abstract

We have updated a recently proposed extension of the Inert Doublet Model. The extension amounts to the addition of an extra non-inert scalar doublet. The model thus offers a possibility of CP violation in the scalar sector and a candidate for the Dark Matter. The recent XENON100 direct-detection experiment excludes a considerable range of medium-low dark-matter masses, leaving only as viable very low masses of order 5-10 GeV, as well as the regions from \sim 60 to \sim 110 GeV, and above \sim 530 GeV. For favorable parameter regions one may observe related long-lived charged particles produced at the LHC.