Abstract
A search for supersymmetric particles in final states with zero, one, and two leptons, with and without jets identified as originating from b-quarks, in 4.7 fb−1 of sqrt{s}=7mbox{ TeV} pp collisions produced by the Large Hadron Collider and recorded by the ATLAS detector is presented. The search uses a set of variables carrying information on the event kinematics transverse and parallel to the beam line that are sensitive to several topologies expected in supersymmetry. Mutually exclusive final states are defined, allowing a combination of all channels to increase the search sensitivity. No deviation from the Standard Model expectation is observed. Upper limits at 95 % confidence level on visible cross-sections for the production of new particles are extracted. Results are interpreted in the context of the constrained minimal supersymmetric extension to the Standard Model and in supersymmetry-inspired models with diverse, high-multiplicity final states.
Highlights
This paper presents a search for strongly produced sparticles that makes use of a variety of final states including high transverse momentum jets and zero, one, or two leptons
The isolation requirement is that the sum of the pT of all charged particle tracks associated with the primary vertex within R = 0.2, where R = ( η)2 + ( φ)2, of the electron is less than 10 % of the electron ET
Signal muons are required to be isolated by ensuring that the sum of the pT of all charged particle tracks associated with the primary vertex within R = 0.2 of the muon is less than 1.8 GeV
Summary
This paper presents a search for strongly produced sparticles that makes use of a variety of final states including high transverse momentum jets and zero, one, or two leptons (electrons or muons). Because of the inclusion of longitudinal information, the requirements on the transverse information to reduce the background are effectively relaxed, making the search sensitive to different regions of kinematic phase space relative to other ETmiss-based searches. These search results complement those already performed by ATLAS.
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