SUSY Searches with Jets at CDF

Supersymmetry (SUSY) [1] is regarded as one of the most compelling theories to describe physics at arbitrarily high energies beyond the Standard Model (SM). In SUSY, a new spin-based symmetry turns a bosonic state into a fermionic state and vice versa postulating the existence of a superpartner for each of the known fundamental particles, with spin differing by 1/2 unit. The phenomenology is determined by the breaking mechanism of the symmetry. Several constraints are assumed to reduce the vast SUSY parameter space. In mSUGRA [2], one of the most extensively studied models, symmetry breaking is achieved via gravitational interactions and only five parameters determine the low energy phenomenology from the scale of Grand Unification(GUT). If R-parity [3] is conserved, SUSY particles have to be produced in pairs and ultimately decay into the lightest supersymmetric particle (LSP), usually identified as the lightest neutralino χ̃1, which constitutes a valid candidate for cold dark matter. The production of squarks (q̃) and gluinos (g̃), superpartners of quarks and gluons, constitutes one of the most promising SUSY channels at the Tevatron because of the strong couplings involved. Their cascade decay will result in a final state consisting of several jets, leptons and missing transverse energy (ET / ) coming from the neutralinos, which leave CDF undetected. In this document, we present the most recent results on searches for squarks and gluinos in pp̄ collisions based on data collected at the CDF experiment.