Effective Dark Matter Model: Relic density, CDMS II, Fermi LAT and LHC

TL;DR

This paper analyzes the implications of potential dark matter signals across multiple experiments, constraining interaction models and exploring detection prospects at relic density, direct, indirect, and collider experiments.

Contribution

It provides a model-independent framework for analyzing dark matter interactions using current experimental data and explores the potential of LHC detection.

Findings

Constraints on dimension-6 operators from experimental data

Implications for dark matter relic density and detection signals

LHC reach for dark matter models

Abstract

The Cryogenic Dark Matter Search recently announced the observation of two signal events with a 77% confidence level. Although statistically inconclusive, it is nevertheless suggestive. In this work we present a model-independent analysis on the implication of a positive signal in dark matter scattering off nuclei. Assuming the interaction between (scalar, fermion or vector) dark matter and the standard model induced by unknown new physics at the scale $\Lambda$, we examine various dimension-6 tree-level induced operators and constrain them using the current experimental data, e.g. the WMAP data of the relic abundance, CDMS II direct detection of the spin-independent scattering, and indirect detection data (Fermi LAT cosmic gamma-ray), etc. Finally, the LHC reach is also explored.