import FWCore.ParameterSet.Config as cms

source = cms.Source("PythiaSource",
    PythiaParameters = cms.PSet(
        #
        # Default cards for minimum bias events (unfiltered)
        # Name of the set is "pythiaMinBias"
        #include "IOMC/GeneratorInterface/test/pythiaMinBias.cfg"
        #
        # User cards - name is "myParameters"
        # Pythia's random generator initialization 
        myParameters = cms.vstring('MSEL=0            ! Users defined processes', 
            'MSUB(1)=1         ! Define Z0/gamma production',
	    'MSTP(43)=2        ! Only Z0',
            'PMAS(23,1)=91.1876 ! Z mass',   
            'MDME(174,1)=0     ! Switch off Z decay to d dbar', 
            'MDME(175,1)=0     ! Switch off Z decay to u ubar', 
            'MDME(176,1)=0     ! Switch off Z decay to s sbar', 
            'MDME(177,1)=0     ! Switch off Z decay to c cbar', 
            'MDME(178,1)=0     ! Switch off Z decay to b bbar', 
            'MDME(179,1)=0     ! Switch off Z decay to t tbar', 
            'MDME(180,1)=0     ! Switch off Z decay to b` b`bar', 
            'MDME(181,1)=0     ! Switch off Z decay to t` t`bar', 
            'MDME(182,1)=0     ! Switch off Z decay to e e+', 
            'MDME(183,1)=0     ! Switch off Z decay to nu_e nu_ebar', 
            'MDME(184,1)=1     ! Z -> mu+mu- switched on', 
            'MDME(185,1)=0     ! Switch off Z decay to nu_mu nu_mubar', 
            'MDME(186,1)=0     ! Switch off Z decay to tau taubar', 
            'MDME(187,1)=0     ! Switch off Z decay to nu_tau nu_taubar', 
            'MSTJ(22)=2        ! Do not decay unstable particles'),
        # This is a vector of ParameterSet names to be read, in this order
        # The first two are in the include files below
        # The last one are simply my additional parameters
        parameterSets = cms.vstring('myParameters')
    )
)