Search for new phenomena with the monojet and missing transverse momentum signature using the ATLAS detector in sqrt(s) = 7 TeV proton-proton collisions

TL;DR

This paper reports a search for new physics phenomena involving a high-energy jet and missing transverse momentum in 7 TeV proton-proton collisions, using ATLAS data, finding results consistent with the Standard Model and setting limits on Large Extra Dimensions.

Contribution

First search for monojet plus missing energy signature at 7 TeV with ATLAS, constraining models of Large Extra Dimensions.

Findings

Observed event count matches Standard Model predictions.

Set new limits on parameters of Large Extra Dimensions.

No evidence of new phenomena detected.

Abstract

A search for new phenomena in events featuring a high energy jet and large missing transverse momentum in proton-proton collisions at sqrt(s) = 7 TeV is presented using a dataset corresponding to an integrated luminosity of 33 pb^-1 recorded with the ATLAS detector at the Large Hadron Collider. The number of observed events is consistent with the Standard Model prediction and this result is interpreted in terms of limits on a model of Large Extra Dimensions.