Elaborating Higgs decay modes in a way:
         event.genHiggsDecayMode =   0  for non-Higgs
                                   +15  for H -> tau tau
                                   +23  for H -> Z Z
                                   +24  for H -> W W
                                   -15  for H -> tau tau SS
                                   -23  for H -> Z Z SS
                                   -24  for H -> W W SS
                                    xx  for H -> xx yy zzz