Search for Invisibly Decaying Higgs Bosons                                     
  
A search for invisibly decaying Higgs boson produced in association with a     
Z0 boson has been performed using data taken with the OPAL detector at LEP     
at the centre-of-mass energies up to 202 GeV.                                  
The search is sensitive to the MSSM Higgs decay                                
to invisible particles such as LSP neutralinos.                                
The upper limit is placed on                                                   
Br(h -> invisible}) assuming the Standard Model production rate.               
  
 Parallel session :11                  
 Plenary  session :7a