Search for new phenomena in events with a monojet and large missing transverse momentum at the LHC using the ATLAS detector

TL;DR

This paper reports a search for new phenomena involving monojet events with large missing transverse momentum at the LHC, using ATLAS data, finding results consistent with the Standard Model and setting new limits on Large Extra Dimensions.

Contribution

First search for monojet plus missing energy signatures at the LHC with ATLAS, providing improved constraints on models with Large Extra Dimensions.

Findings

Data agrees with Standard Model predictions

No evidence of new phenomena observed

Set new limits on Large Extra Dimensions

Abstract

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.