Global Study of the Simplest Scalar Phantom Dark Matter Model

TL;DR

This paper conducts a comprehensive analysis of a simple scalar phantom dark matter model, integrating multiple experimental constraints to identify viable parameter space and predict observable signals for future detection efforts.

Contribution

It provides the first global fit of the scalar phantom dark matter model considering relic density, direct and indirect detection, collider signals, and muon magnetic moment constraints.

Findings

Identified parameter regions consistent with current experimental data.

Predicted gamma-ray line signals within reach of future observations.

Estimated collider event rates and muon g-2 contributions for the model.

Abstract

We present a global study of the simplest scalar phantom dark matter model. The best fit parameters of the model are determined by simultaneously imposing (i) relic density constraint from WMAP, (ii) 225 live days data from direct experiment XENON100, (iii) upper limit of gamma-ray flux from Fermi-LAT indirect detection based on dwarf spheroidal satellite galaxies, and (iv) the Higgs boson candidate with a mass about 125 GeV and its invisible branching ratio no larger than 40% if the decay of the Higgs boson into a pair of dark matter is kinematically allowed. The allowed parameter space is then used to predict annihilation cross sections for gamma-ray lines, event rates for three processes mono-b jet, single charged lepton and two charged leptons plus missing energies at the Large Hadron Collider, as well as to evaluate the muon anomalous magnetic dipole moment for the model.