Search for Stable and Long-Lived Massive Charged Particles                     
in e+e- Collisions at sqrt(s)=130-189 GeV                                      
  
  A search has been performed for pair-production of stable and                
  long-lived massive particles with                                            
  charge |Q/e|=1 or 2/3.                                                       
  No evidence for the production of such particles                             
  was observed. The cross-section upper limits                                 
  vary between 0.015 and 0.25 pb for particles of charge +-1.                  
  Within the MSSM, lower mass limits on the                                    
  the right- (left-) handed smuons and staus, of                               
  88.0 GeV (90.0 GeV), have been obtained.                                     
  Heavy long-lived charged leptons and                                         
  long-lived charginos with masses smaller than 93.5 GeV                       
  are excluded.                                                                
  For particles with charge +-2/3, the production cross-section upper limits   
  vary between 0.015 and 0.07 pb.                                              
  
 Parallel session :11                  
 Plenary  session :7a