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# Title: Search for electroweak production of supersymmetric particles in final states with two or three leptons at $\sqrt{s}=13$ TeV with the ATLAS detector

Abstract: A search for the electroweak production of charginos, neutralinos and sleptons decaying into final states involving two or three electrons or muons is presented. The analysis is based on 36.1 fb$^{-1}$ of $\sqrt{s}=13$ TeV proton-proton collisions recorded by the ATLAS detector at the Large Hadron Collider. Several scenarios based on simplified models are considered. These include the associated production of the next-to-lightest neutralino and the lightest chargino, followed by their decays into final states with leptons and the lightest neutralino via either sleptons or Standard Model gauge bosons; direct production of chargino pairs, which in turn decay into leptons and the lightest neutralino via intermediate sleptons; and slepton pair production, where each slepton decays directly into the lightest neutralino and a lepton. No significant deviations from the Standard Model expectation are observed and stringent limits at 95% confidence level are placed on the masses of relevant supersymmetric particles in each of these scenarios. For a massless lightest neutralino, masses up to 580 GeV are excluded for the associated production of the next-to-lightest neutralino and the lightest chargino, assuming gauge-boson mediated decays, whereas for slepton-pair production masses up to 500 GeV are excluded assuming three generations of mass-degenerate sleptons.
 Comments: 53 pages in total, author list starting page 37, 8 figures, 15 tables, final version published in EPJ C, all figures including auxiliary figures are available at this https URL Subjects: High Energy Physics - Experiment (hep-ex) Journal reference: Eur. Phys. J. C 78 (2018) 995 DOI: 10.1140/epjc/s10052-018-6423-7 Report number: CERN-EP-2017-303 Cite as: arXiv:1803.02762 [hep-ex] (or arXiv:1803.02762v2 [hep-ex] for this version)

## Submission history

From: The ATLAS Collaboration [view email]
[v1] Wed, 7 Mar 2018 16:53:27 GMT (504kb,D)
[v2] Thu, 10 Jan 2019 18:06:40 GMT (562kb,D)
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