Particles generated with the same PID 1841207872

Asked by Nayara Amaral de Souza

Hi, hope you all are well. I'm trying to analyze the muons resulting from the collision p p > Z > mu+ mu- to plot the invariant mass of Z. To do this analysis, I'm trying to use madgraph, and the .root output of Delphes, in the particles branch. However, when I make the code to analyze the events, all the particles of the events have the PID 1841207872, can you tell me what could be if that? Any kind of error in the code? or some version error or program installation (root/madgraph/deslphes).

Thanks in advance, best regards.

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Olivier Mattelaer (olivier-mattelaer) said :
#1

HI,

A priori this pid is not generated by MG5aMC maybe by pythia or by Delphes, I do not know.
In order to see who is responsible for this pid code,
you need to check if this pid is present in the leshouches_events (if so MG5aMC is the responsible)
if not then you can check if the pid is present in the hepmc output file (if so this is introduced by pythia and you should contact pythia author)
if none of those two file contains such pid, then you need to contact Delphes author.

Cheers,

Olivier

> On 21 Aug 2021, at 21:00, Nayara Amaral de Souza <email address hidden> wrote:
>
> New question #698452 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/698452
>
> Hi, hope you all are well. I'm trying to analyze the muons resulting from the collision p p > Z > mu+ mu- to plot the invariant mass of Z. To do this analysis, I'm trying to use madgraph, and the .root output of Delphes, in the particles branch. However, when I make the code to analyze the events, all the particles of the events have the PID 1841207872, can you tell me what could be if that? Any kind of error in the code? or some version error or program installation (root/madgraph/deslphes).
>
> Thanks in advance, best regards.
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

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