Search for supersymmetry using final states with one lepton, jets, and missing transverse momentum with the ATLAS detector in sqrt{s} = 7 TeV pp

TL;DR

This paper reports the first search for supersymmetry in final states with one lepton, jets, and missing transverse momentum at 7 TeV proton-proton collisions, setting new limits on gluino masses with no observed excess.

Contribution

It presents the first ATLAS search for supersymmetry in these specific final states at 7 TeV, extending previous limits on gluino masses.

Findings

No excess above standard model background observed

Gluino masses below 700 GeV excluded at 95% confidence level

Limits set on minimal supergravity parameters

Abstract

This Letter presents the first search for supersymmetry in final states containing one isolated electron or muon, jets, and missing transverse momentum from sqrt{s} = 7 TeV proton-proton collisions at the LHC. The data were recorded by the ATLAS experiment during 2010 and correspond to a total integrated luminosity of 35 pb-1. No excess above the standard model background expectation is observed. Limits are set on the parameters of the minimal supergravity framework, extending previous limits. For A_0 = 0 GeV, tan beta = 3, mu > 0 and for equal squark and gluino masses, gluino masses below 700 GeV are excluded at 95% confidence level.