Table of Contents

• Some questions
  • CMS perspective only
  • General Questions

Some questions

CMS perspective only

1. Why do we need reweight card?

2. Does only customized card work?

General Questions

1. What is the meaning of [QCD] syntax?

   This adds one additional jet in the channel.
   

2. What is the meaning of [noborn=QCD] syntax?

   Generally, all relevant matrix elements has three kind of diagrams. They are born (tree level diagrams), virtual and real-emission.
   
   One can use the different kind of syntax depending on the use. If we would like to ignore the tree level diagrams then we should use the syntax of [noborn=QCD].
   
   Other possibilities are [real=QCD] or [loop=QCD] to exclude the virtual diagrams.
   

3. What is the meaning of the order QED/QCD?

   By default madgraph takes lowest order of QED and highest order of QCD.