ickkw settings in run card

Asked by Sihyun Jeon


I have a question about the ickkw setting in the run card.

When you do
generate p p > e+ e- [QCD]
add process p p > e+ e- j [QCD]
add process p p > e+ e- j j [QCD]

Does it make a difference when you do in "LHE level" event files :
1) ickkw=4 for UNLOPS
2) ickkw=3 for FxFx
Or is it just a flag that you set in MGamcatnlo to let Pythia know what it should do and the event files itself are equivalent?


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MadGraph5_aMC@NLO Edit question
Rikkert Frederix Edit question
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Sihyun Jeon (shjeon) said :

And maybe the same question goes to MLM as well in LO.

If you set the same xqcut = 10.0
and give ickkw=1 and ickkw=4 (for UNLOPS), would it affect the physics in the LHE files?

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Rikkert Frederix (frederix) said :

Dear Sihyun,

The LHE files are different depending on the ickkw setting.


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