University of Pennsylvania
Department of Physics and Astronomy
High Energy Physics Seminar

Abstract

Despite its success in describing the sub-nuclear world, the Standard Model of Particle Physics (SM) is regarded as a low energy effective theory because of several theoretical and experimental open questions. One of the most favored models for physics beyond the SM is Supersymmetry (SUSY). SUSY is a proposed symmetry of Nature which introduces a fermion (boson) for each SM boson (fermion) with the same quantum numbers but the spin, which differs by 1/2. The shadow world of super-particles has not been observed yet, implying that SUSY is a broken symmetry. Currently the optimal place for super-particle hunting is the proton-antiproton collisions produced by the Tevatron Collider at \sqrt{s} = 1.96 GeV. The CDF experiment investigated 0.7 fb^-1 of data looking for events with three leptons and significant missing transverse energy. Because of its striking and rare signature, this mode is reckoned as the Golden Channel for SUSY at Hadron Colliders. The talk focuses on the latest results interpreted in the minimal supersymmetric extension of the SM.