Author: Gary Taylor (UC Santa Cruz/ALEPH)
Title: Searches for GMSB at a centre-of-mass 189 GeV at LEP
Abstract: Searches for Gauge Mediated Supersymmetry Breaking toplogies are performed on 170 pb-1 of data collected at a centre-of-mass energy of 188.6 GeV by each of the four LEP experiments. No evidence for such processes is found allowing 95% C.L. lower limits to be set on the masses of various particles in the context of GMSB. In particular,it is found that the lightest neutralino must be heavier that 90 GeV/c2,the right-handed stau must be heavier than 76 GeV/c2 and the gravitino must be heavier than 1.1x10-5 eV/c2.