running pythia8 error : not support normalization to the sum.

Hi,

Can you copy/paste the debug file created when the code crash?

> And another question is not relate to this error.
> If we want to decay particle with PY8 in MG5.
> Is the commands same as what we do in stand-alone PY8?
> i.e. add this two command to let H > b b~
> 25:onMode = off ! First switch decays off
> 25:onIfMatch = 5 5 ! Decay mode 1 of 5

Yes this is correct.

Cheers,

Olivier

> On 1 May 2017, at 07:24, Chang Jung <email address hidden> wrote:
>
> New question #630482 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/630482
>
> Dear Sir,
>
> I run pythia8 with MG5 v2.5.3.
> And got this error : Pythia8 does not support normalization to the sum. Not running Pythia8
> I set this in run card :
> average = event_norm ! average/sum. Normalization of the weight in the LHEF
> False = cut_decays ! Cut decay products
> But when I re-launch (not change any setting), its OK to run PY8.
> How to set the cards to avoid this error message?
>
> And another question is not relate to this error.
> If we want to decay particle with PY8 in MG5.
> Is the commands same as what we do in stand-alone PY8?
> i.e. add this two command to let H > b b~
> 25:onMode = off ! First switch decays off
> 25:onIfMatch = 5 5 ! Decay mode 1 of 5
>
>
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.