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Search for supersymmetry in final states with two same-sign or three leptons and jets using 36 fb−1 of √s = 13 TeV pp collision data with the ATLAS detector
ATLAS Collaboration
ATLAS Collaboration
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Abstract
A search for strongly produced supersymmetric particles using signatures involving multiple energetic jets and either two isolated same-sign leptons (e or μ), or at least three isolated leptons, is presented. The analysis relies on the identification of b-jets and high missing transverse momentum to achieve good sensitivity. A data sample of proton-proton collisions at s√=13 TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015 and 2016, corresponding to a total integrated luminosity of 36.1 fb−1, is used for the search. No significant excess over the Standard Model prediction is observed. The results are interpreted in several simplified supersymmetric models featuring R-parity conservation or R-parity violation, extending the exclusion limits from previous searches. In models considering gluino pair production, gluino masses are excluded up to 1.87 TeV at 95% confidence level. When bottom squarks are pair-produced and decay to a chargino and a top quark, models with bottom squark masses below 700 GeV and light neutralinos are excluded at 95% confidence level. In addition, model-independent limits are set on a possible contribution of new phenomena to the signal region yields.
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Date
2017-09-19
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Springer Verlag
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ATLAS_Collab_2017.pdf
Adobe PDF, 1.7 MB
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Hadron-Hadron scattering (experiments), Supersymmetry
Citation
The ATLAS collaboration, Aaboud, M., Aad, G. et al. J. High Energ. Phys. (2017) 2017: 84. https://doi.org/10.1007/JHEP09(2017)084