Collider Constraints on the Dark Matter Interpretation of the CDMS II Results

TL;DR

This paper interprets CDMS II's potential dark matter signals using effective interactions, predicts collider signatures, and assesses current and future constraints from LHC data on these models.

Contribution

It introduces an effective interaction framework to interpret CDMS II results and evaluates collider constraints and prospects for probing these dark matter models at the LHC.

Findings

Some operators are already excluded by current LHC data.

Others can be tested in upcoming 14 TeV LHC runs.

The study links direct detection signals with collider phenomenology.

Abstract

The recent observation of three events by the CDMS II experiment can be interpreted as a 8.6 GeV dark matter scatters elastically with the nucleons inside the silicon detectors with a spin-independent cross section of 1.9 x 10^-41 cm^2. We employ the effective dark matter interaction approach to fit to the interpreted cross section, and make predictions for monojet and monophoton production at the LHC with the fitted parameters. We show that some of the operators are already ruled out by current data while the others can be further probed in the upcoming 14 TeV run of the LHC.