Probing Gauge-Mediated Supersymmetry Breaking Through Polarized Electron   Beams in an $e^+e^-$ Collider
  Using the facts that in Gauge-Mediated Supersymmetry Breaking schemes, masses of the right and the left sfermions can differ widely, and the gravitino is the Lightest Supersymmetric Particle, we show that it is possible to obtain unambiguous signatures of such schemes in a high energy $e^+e^-$ collider if one looks at the asymmetries in the cross-sections for certain final states with left-and right-polarized beams. 
Ambar Ghosal, Anirban Kundu and Biswarup Mukhopadhyaya