Search for new phenomena in events with a mono-jet and large missing transverse momentum with the ATLAS detector

We present results by the ATLAS experiment on a search for new phenomena in pp collision events with one high momentum jet and large missing transverse energy. The data are compared to the SM predictions, dominated by the background from W/Z+jets production with neutrinos and mis-identified electrons and muons in the final state. The results are interpreted in the context of different beyond the Standard Model scenarios: ADD models with Large Extra Dimensions, generic dark matter WIMP production, and Gauge Mediated SUSY Breaking with production of gravitinos.