MadGraph5_aMC@NLO

Generating a param_card.dat with revised widths

Asked by Flip

Hello,

I'm trying to do a batch run of MadGraph from the command prompt that requires re-calculating particle widths. I know that from the MadGraph user interface calculating a two body decay automatically generates a new parameter card in the Events/run_name directory.

However, when I run ./generate_events with a proc_card.dat that has a two body decay, it does not generate such a param_card.dat in events directory. Is there a way to turn this on without having to manually run through the MG user interface?

Thanks,

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Olivier Mattelaer (olivier-mattelaer) said : 		#1

Hi,

You can do the following:
1) write a file CMD.CMD
with the following lines:
launch
#if you have pythia-pgs install enter the answer to the first question

# modify the cards (set to width in automatic mode)
set width 6 Auto
#continue as long as needed.

Then you can run this file by doing
./bin/madevent CMD.CMD

Cheers,

Olivier

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