In new outcomes presented at CERN, the ATLAS Experiment’s search for supersymmetry reached new levels of sensitivity.
The outcomes review a popular supersymmetry extension studied at the Large Hadron Collider (LHC): the “Minimal Supersymmetric Standard Model” (MSSM), which includes the minimum needed number of new particles and interactions to make predictions at the LHC energies. Nonetheless, even this minimal model introduces a considerable amount of new parameters, whose values are not predicted by free parameters
To shape their search, ATLAS physicists seek “natural” supersymmetry, which assumes the various corrections to the Higgs mass comparable in magnitude and their sum near the electroweak scale. Under this paradigm, the supersymmetric companions of the third-generation quarks and gluons may have masses near the TeV range. They could be produced via the strong interaction at charges large enough to be noticed at the LHC.
In the latest CERN LHC seminar, the ATLAS Collaboration displayed new results in the search for natural supersymmetry, along with searches for top squarks and gluinos using the full LHC Run-2 dataset collected between 2015 and 2018.
The new outcomes explore previously exposed, challenging areas of the free parameter space.
That is achieved due to new analysis methods improving the identification of low-energy and high-energy particles in the final stage.
ATLAS’ search for top squarks was carried out by selecting proton-proton collisions containing as much as one particle or muon.