Constraining Scalar Singlet Dark Matter with CDMS, XENON and DAMA and Prediction for Direct Detection Rates

TL;DR

This paper investigates a simple scalar singlet extension of the Standard Model as a dark matter candidate, constraining its parameters using multiple direct detection experiments and relic density data, and predicting detection rates for future experiments.

Contribution

It provides a comprehensive analysis of the scalar singlet dark matter model constrained by various experimental data and predicts detection rates for upcoming liquid argon detectors.

Findings

Parameter space constrained by CDMS, XENON, DAMA, and CoGeNT data.

Relic density constraints from WMAP incorporated.

Predicted event rates for future liquid argon detectors.

Abstract

We consider a simplest extension of the Standard Model (SM) through the incorporation of a real scalar singlet and an additional discrete $Z_2$ symmetry. The model admits the neutral scalar singlet to be stable and thus, a viable component of dark matter. We explore the parameter space of the model keeping in view the constraints arise from different dark matter direct detection experiments through WIMP-nucleon scattering. First of all, we have utilised the data obtained from CDMS, XENON-10 and XENON-100 collaborations. We further constraint the parameter space from the DAMA collaboration results (both with and without channelling) and CoGeNT collaboration results. Throughout our analysis, the constraint arises due to the observed relic density of dark matter reported by WMAP experiment, is also incorporated. Utilising all those constraints, on the model parameter space, we calculate the event rates and the annual variation of event rates in the context of a Liquid Argon Detector experiment.