!MadGraph5 Syntax For generate events

Compared to ​MG4 the syntax is basically the same but

1. All particles should be separated with a spaces

   write this:
      w+ > ve e+
   and not:
      w+>vee+
   

2. The coupling is specify after the process in the same line. Please note that:
   1. Note that contrary to !MG4 the default for the coupling is to infinity
   2. couplings are case sensitive

      write this:
         w+ > ve e+ QED=2
      and not:
         w+>ve e+ qed=2
      

3. you can still use the special tag at the end of the process
   1. "/" fordids the following particles to appear in the process
   2. "$" fordids the following particles to appear in a S-Channel

4. The syntax for decay chain is different.
   1. In !MG5 the production process is separated from the decay by a coma.
   2. Each part can be restricted by couplings/ special tag restrictions

      write this:
         g g > t t~ QED=0 /a, (t > b W+, W+ > l+ vl), t~ >j j j QCD=0
      and not:
         g g > (t >b (W+ >l+vl))(t~> j j j)      
      

Note that If you run MG5 on MG4 proc_card. for a decay chains, then the couplings restriction will be applied only on the core process.