Scalar Dark Matter: Real vs Complex

TL;DR

This paper updates the parameter space for real and complex scalar dark matter models via the Higgs portal, considering recent experimental constraints, and narrows down the viable mass regions significantly.

Contribution

It provides the latest constraints on scalar dark matter models, refining the allowed mass ranges based on recent experimental data.

Findings

Resonant mass region narrowed to 54.9-62.3 GeV

Large mass region excluded up to 834 GeV (real) and 3473 GeV (complex)

Constraints from LUX 2016, Higgs decay, and gamma-ray data applied

Abstract

We update the parameter spaces for both a real and complex scalar dark matter via the Higgs portal. In the light of constraints arising from the LUX 2016 data, the latest Higgs invisible decay and the gamma ray spectrum, the dark matter resonant mass region is further restricted to a narrow window between $54.9-62.3$ GeV in both cases, and its large mass region is excluded until $834$ GeV and $3473$ GeV for the real and complex scalar, respectively.