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https://hdl.handle.net/10316/108233
Title: | 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 | Authors: | Santos, S. P. Amor dos Fiolhais, M. C. N. Galhardo, B. Veloso, F. Wolters, H. ATLAS Collaboration |
Keywords: | Hadron-Hadron scattering (experiments); Supersymmetry | Issue Date: | 2017 | Publisher: | Springer Nature | Serial title, monograph or event: | Journal of High Energy Physics | Volume: | 2017 | Issue: | 9 | Abstract: | A search for strongly produced supersymmetric particles using signatures involving multiple energetic jets and either two isolated same-sign leptons (e or ), or at least three isolated leptons, is presented. The analysis relies on the identi cation of b-jets and high missing transverse momentum to achieve good sensitivity. A data sample of protonproton collisions at p 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 fb1, is used for the search. No signi cant excess over the Standard Model prediction is observed. The results are interpreted in several simpli ed 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% con dence 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% con dence level. In addition, model-independent limits are set on a possible contribution of new phenomena to the signal region yields. | URI: | https://hdl.handle.net/10316/108233 | DOI: | 10.1007/JHEP09(2017)084 | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
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