Search for squarks and gluinos in final states with same-sign leptons and jets using 139 fb$^{-1}$ of data collected with the ATLAS detector

A search for supersymmetric partners of gluons and quarks is presented, involving signatures with jets and either two isolated leptons (electrons or muons) with the same electric charge, or at least three isolated leptons. A data sample of proton-proton collisions at

\sqrt{s}

= 13 TeV recorded with the ATLAS detector at the Large Hadron Collider between 2015 and 2018, corresponding to a total integrated luminosity of 139 fb

^{−1}

, is used for the search. No significant excess over the Standard Model expectation is observed. The results are interpreted in simplified supersymmetric models featuring both R-parity conservation and R-parity violation, raising the exclusion limits beyond those of previous ATLAS searches to 1600 GeV for gluino masses and 750 GeV for bottom and top squark masses in these scenarios.[graphic not available: see fulltext]

Note:

42 pages in total, author list starting page 26, 8 figures, 6 tables, submitted to JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2018-09

Hadron-Hadron scattering (experiments)
Supersymmetry
p p: colliding beams
squark: search for
squark: mass
gluino: mass: lower limit
sbottom: mass: lower limit
stop: mass: lower limit
R parity: violation
R parity: invariance

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Search for squarks and gluinos in final states with same-sign leptons and jets using 139 fb−1^{-1}−1 of data collected with the ATLAS detector

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Search for squarks and gluinos in final states with same-sign leptons and jets using 139 fb $^{-1}$ of data collected with the ATLAS detector