Search for new phenomena in events with a monojet and large missing   transverse momentum at the LHC using the ATLAS detector
  We report preliminary results on a search for new phenomena in an event sample with monojets and large missing transverse momentum in the final state. The analysis uses 1.00 fb-1 of data collected in 2011 with the ATLAS detector. Good agreement is observed between the number of events in data and the Standard Model predictions. The results are translated into improved limits on a model with Large Extra Dimensions. 
Mario Martinez (for the ATLAS Collaboration)
hep-ex