When LEP and Tevatron combined with WMAP and XENON100 shed light on the nature of Dark Matter

TL;DR

This paper analyzes how combining LEP, Tevatron, WMAP, and XENON100 data constrains light dark matter models, especially fermionic ones coupling to electrons, revealing significant exclusions for certain scenarios.

Contribution

It provides a comprehensive analysis of dark matter constraints by integrating collider, astrophysical, and direct detection data, highlighting the limitations on light fermionic dark matter.

Findings

Light fermionic dark matter coupling to electrons is largely ruled out by combined constraints.

Scalar dark matter coupling to electrons is constrained through mono-photon event simulations.

The analysis narrows down viable dark matter models consistent with multiple experimental results.

Abstract

Recently, several astrophysical data or would-be signals has been observed in different dark-matter oriented experiments. In each case, one could fit the data at the price of specific nature of the coupling between the Standard Model (SM) particles and a light Dark Matter candidate: hadrophobic (INTEGRAL, PAMELA) or leptophobic (WMAP Haze, dijet anomalies of CDF, FERMI Galactic Center observation). In this work, we show that when one takes into account the more recent LEP and Tevatron analysis, a light thermal fermionic Dark Matte (\lesssim 10 GeV) that couples to electrons is mainly ruled out if one combines the analysis with WMAP constraints. We also study the special case of scalar dark matter, using a mono-photon events simulation to constrain the coupling of dark matter to electron.