Search for squarks and gluinos in final states with same-sign leptons and jets using 139 fb$^{-1}$ of data collected with the ATLAS detector

The ATLAS collaboration
JHEP 06 (2020) 046, 2020.

Abstract (data abstract)
A search for supersymmetric partners of gluons and quarks is presented, involving signatures with jets and either two isolated leptons ($e$ or $\mu$) with the same electric charge, or at least three isolated leptons. The analysis also relies on $b$-tagged jets or missing transverse momentum to extend its sensitivity. A data sample of proton--proton collisions at $\sqrt{s}$ = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider between 2015 and 2018, corresponding to a total integrated luminosity of 139 fb$^{-1}$, is used for the search. No significant excess over the Standard Model expectation is observed. The results are interpreted in simplified supersymmetric models featuring both $R$-parity conservation and $R$-parity violation, extending the exclusion limits from previous searches up to 1600 GeV for gluino masses and 750 GeV bottom and top squark masses in these scenarios.


Archive of full likelihoods in the HistFactory JSON format described in ATL-PHYS-PUB-2019-029. Five statistical models Rpc2L0b, Rpc2L1b, Rpc2L2b, Rpc3LSS1b, and Rpv2L are provided. For each model the background-only model is found in the file named '[model]_BkgOnly.json', while a set of patches for various signal points is provided in the file named '[model]_patchset.json'.

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