Beauty particle production in photon-photon scattering at LEP2                 
  
The total cross-section of the process photon-photon-> bbbar has               
been measured using data taking by the OPAL detector at LEP                    
at centre-of-mass energies between 189 and 202 GeV. The bbbar                  
events are tagged using semi-leptonic decays into muons. The                   
results are compared with NLO calculations.                                    
  
 Parallel session : 2                  
 Plenary  session :12