Journal of High Energy Physics > 2017 > 2017 > 9 > 1-45
Search for supersymmetry in final states with two same-sign or three leptons and jets using 36 fb−1 of s = 13 $$ \sqrt{s}=13 $$ TeV pp collision data with the ATLAS detector
Source
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 $$ \sqrt{s}=13 $$ 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.
Identifiers
journal e-ISSN : | 1029-8479 |
DOI | 10.1007/JHEP09(2017)084 |
Authors
The ATLAS collaboration
- University Politehnica Bucharest, Bucharest, Romania
- Dep Fisica and CEFITEC of Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
- Centre National de l’Energie des Sciences Techniques Nucleaires, Rabat, Morocco
- CERN, Geneva 23, Switzerland
B. Abbott
- University of Oklahoma, Homer L. Dodge Department of Physics and Astronomy, Norman, U.S.A.