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 Academic Article uri icon

abstract

  • © 2017, The Author(s). 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.[Figure not available: see fulltext.].

altmetric score

  • 1.5

author list (cited authors)

  • The ATLAS collaboration, .., Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., ... Zwalinski, L.

citation count

  • 29

publication date

  • September 2017