problem with shower pythia8

You probably need some special setting for Pythia to work in that case.
I actually do not know pythia well enough to tell you how to tweak pytthia8 to make it work.
Please read the pythia8 manual and/or contact Pythia8 author about this.

Cheers,

Olivier

> On 20 Dec 2020, at 13:25, lyb <email address hidden> wrote:
>
> New question #694600 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/694600
>
> Hi,
>
> I'm trying to generate some events with mg5 and pythia8, but there is a problem.
> I generate a simple process in SM within e gamma collider
> generate e- a > w- ve, w- > j j
>
> If I change run_card.dat, as
> #*********************************************************************
> 0 = lpp1 ! beam 1 type
> 0 = lpp2 ! beam 2 type
> 250.0 = ebeam1 ! beam 1 total energy in GeV
> 250.0 = ebeam2 ! beam 2 total energy in GeV
>
> Submitting Pythia8 jobs...
> Pythia8 shower jobs: 1 Idle, 0 Running, 0 Done [0 second]
> Pythia8 shower jobs: 0 Idle, 1 Running, 0 Done [5m00s]
>
> First, I just thought it takes long time, but it was still in the same state a few hours after.
> I tried many times, but the results were same.
>
> Cheers,
> Yao-Bei
>
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