MG5 running very slow for a particular process

Hi,

Did you set the width to zero?

Cheers,

Olivier
On Oct 7, 2013, at 3:26 AM, Anthony DiFranzo <email address hidden> wrote:

> New question #236937 on MadGraph5:
> https://answers.launchpad.net/madgraph5/+question/236937
>
> Hello everyone,
>
> I put together a Z' model, where I only introduce a new vector and include a few interactions to the SM, so nothing very complete.
>
> When I go to generate a cross section with the Z' in the s-channel (say p p > z' > e+ e-) it takes a very long time. And when it does complete the calculation it has only produced 5-20 events rather than 10000. Also the cross-section it does calculate is very big , order 10^6 pb.
>
> I've spent a long time trying to find my mistake but can't seem to. I've also checked similar processes involving SM particles in its place and they work just fine in my model.
>
> Does seem indicative of a particular error?
>
> Since no error is being reported, I don't have a debug file, but let me know if there is anything I can send that would help.
>
> Thank you!
>
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