CERN Accelerating science

ATLAS Note
Report number	ATLAS-CONF-2023-017
Title	Search for pair production of squarks or gluinos decaying via sleptons or weak bosons in final states with two same-sign or three leptons with the ATLAS detector
Corporate Author(s)	The ATLAS collaboration
Collaboration	ATLAS Collaboration
Publication	2023
Imprint	03 Apr 2023
Number of pages	36
Note	All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/CONFNOTES/ATLAS-CONF-2023-017
In:	57th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, It, 18 - 25 Mar 2023
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	SUSY ; same-sign ; lepton ; squark ; gluino
Abstract	A search for pair production of squarks or gluinos decaying via sleptons or weak bosons is reported. The search targets a final state with exactly two leptons with same-sign electric charge or at least three leptons without any charge requirement. The analysed dataset corresponds to an integrated luminosity of 139 fb$^{−1}$ of proton-proton collisions collected at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC. Multiple signal regions are defined targeting several SUSY simplified models yielding the desired final states. A unique control region is used to constrain the normalisation of the WZ+jets background. No significant excess of events over the Standard Model expectation is observed. The results are interpreted in the context of several supersymmetric models featuring R-parity conservation or R-parity violation, extending the exclusion limits from previous searches. In models considering gluino (squark) pair production, gluino (squark) masses are excluded up to 2.2 (1.7) TeV at 95% confidence level.
Related document	superseded by: CERN-EP-2023-123

Corresponding record in: Inspire