Search for dark matter candidates and large extra dimensions in events with a photon and missing transverse momentum in pp collision data at sqrt(s) = 7 TeV with the ATLAS detector

TL;DR

This paper reports a search for dark matter and extra dimensions using photon and missing energy events in 7 TeV proton-proton collisions, finding no deviations from the Standard Model and setting exclusion limits on new physics models.

Contribution

It presents the first ATLAS search for dark matter and large extra dimensions in photon plus missing energy events at 7 TeV, establishing new exclusion limits.

Findings

No significant excess over Standard Model predictions

Exclusion limits set on models with large extra dimensions

Constraints placed on pair production of dark matter candidates

Abstract

Results of a search for new phenomena in events with an energetic photon and large missing transverse momentum in proton-proton collisions at sqrt(s)=7 TeV are reported. Data collected by the ATLAS experiment at the LHC corresponding to an integrated luminosity of 4.6 fb-1 are used. Good agreement is observed between the data and the Standard Model predictions. The results are translated into exclusion limits on models with large extra spatial dimensions and on pair production of weakly interacting dark matter candidates.