Search for supersymmetry at √8=8 TeV in final states with jets and two same-sign leptons or three leptons with the ATLAS detector

Agustoni, Marco; Beck, Hans Peter; Cervelli, Alberto; Ereditato, Antonio; Gallo, Valentina; Haug, Sigve; Kruker, Tobias; Marti, Lukas; Meloni, Federico; Schneider, Basil; Sciacca, Gianfranco; Stramaglia, Maria; Stucci, Stefania Antonia; Weber, Michael (2014). Search for supersymmetry at √8=8 TeV in final states with jets and two same-sign leptons or three leptons with the ATLAS detector. Journal of High Energy Physics, 2014(6) Springer 10.1007/JHEP06(2014)035

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A search for strongly produced supersymmetric particles is conducted using signatures involving multiple energetic jets and either two isolated leptons (e or μ) with the same electric charge, or at least three isolated leptons. The search also utilises jets originating
from b-quarks, missing transverse momentum and other observables to extend its sensitivity. The analysis uses a data sample corresponding to a total integrated luminosity
of 20.3 fb−1 of ps = 8TeV proton-proton collisions recorded with the ATLAS detector at
the Large Hadron Collider in 2012. No deviation from the Standard Model expectation
is observed. New or significantly improved exclusion limits are set on a wide variety of
supersymmetric models in which the lightest squark can be of the first, second or third
generations, and in which R-parity can be conserved or violated.

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