MadGraph5_aMC@NLO

Missing diagram u u > W+ Z u d > W+ u d?

Asked by Melissa

Dear reader,

It seems to me that the diagram I am trying to create ( u u > W+ Z u d > W+ u d, or similar ones) does not exist. What am I doing wrong?

Cheers,
Melissa

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Olivier Mattelaer (olivier-mattelaer) said : 		#1

Hi Melissa,

Well you enter a wrong syntax and this is so wrong that i have no idea of the kind of diagram that you want to generate and therefore
I can not help you.
My only suggestion is to read the following link:
https://cp3.irmp.ucl.ac.be/projects/madgraph/attachment/wiki/MGTalks/13_06_10_tutomg_tasi.pdf

Cheers,

Olivier

On 01 Sep 2015, at 17:31, Melissa <email address hidden> wrote:

> New question #270981 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/270981
>
> Dear reader,
>
> It seems to me that the diagram I am trying to create ( u u > W+ Z u d > W+ u d, or similar ones) does not exist. What am I doing wrong?
>
> Cheers,
> Melissa
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Revision history for this message
Melissa (mcbeekveld) said : 		#2

Hi Olivier,

I've read through some tutorials, but I am having trouble with finding the right syntax. What I want is a proton proton collision, where constituents annihilate to two jet forming particles and W+ and Z, and then I want W+ and Z to annihilate to W+. W+ can do whatever it wants after that. Thanks for any help!

Cheers,
Melissa

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#3

Hi,

For gauge invariance point of view, this is impossible to have only that diagram.
The best is to use the following syntax:

generate u u > W+ u d QCD=0

Cheers,

Olivier
On 02 Sep 2015, at 10:31, Melissa <email address hidden> wrote:

> Question #270981 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/270981
>
> Status: Answered => Open
>
> Melissa is still having a problem:
> Hi Olivier,
>
> I've read through some tutorials, but I am having trouble with finding
> the right syntax. What I want is a proton proton collision, where
> constituents annihilate to two jet forming particles and W+ and Z, and
> then I want W+ and Z to annihilate to W+. W+ can do whatever it wants
> after that. Thanks for any help!
>
> Cheers,
> Melissa
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Revision history for this message
Melissa (mcbeekveld) said : 		#4

Thanks, I will try this!