Leptonic Events with Missing Energy in e+e-                                    
   Collisions at sqrt(s) = 183-202 GeV                                         
  
A selection of di-lepton events with significant missing transverse momentum   
has been performed using a total data sample of 460 inverse pico-barns         
at e+e- centre-of-mass energies of 183 to 202 GeV.                             
In addition, events with a single charged lepton and missing energy are selecte
Cross-section measurements for each di-lepton final state and single lepton    
final state are presented and compared with Standard Model predictions         
arising predominantly from W-pair production and single W production           
with the W's decaying leptonically.                                            
These topologies are used to search for new particle production and results    
of the searches for selectron, smuon and stau pairs, leptonically decaying     
charginos and charged Higgs are presented.                                     
  
 Parallel session :11                  
 Plenary  session :7a