Integrating an independent download of Delphes

Asked by Asher Berlin on 2014-06-09

Hi,

Using Madgraph5 v1.5.14, I've installed pythia ( via the Madgraph "install pythia-pgs" command), and I am now attempting to integrate an independent download of Delphes v3.0.9. I've modified the file input/mg5_configuration.txt and set the path to my Delphes installation. I've also replaced the file Template/Cards/delphes_card_default.dat with a valid Delphes3 collider card. Specifically, I've taken the Delphes example card, delphes_card_CMS.tcl, renamed it delphes_card_default.dat, and put it in the directory Template/Cards. However, when I attempt to run pythia+delphes in Madgraph, the resulting .lhco file contains no events.

Is there a way to install a specific older version of Delphes 3 within Madgraph, similar to the generic "install Delphes" command?

If not, any ideas of what is going wrong? I suspect I'm doing something with the replacement delphes-card_default.dat that isn't correct.

Thanks,
Asher

Question information

Language:
English Edit question
Status:
Answered
For:
MadGraph5_aMC@NLO Edit question
Assignee:
Pavel Demin Edit question
Last query:
2014-06-09
Last reply:
2014-06-10

Hi Pavel, Ahsher

Pavel, I'm assigning this question to you for the moment, since I expect that the problem is linked to the STDHEP format.
The latest version of pythia-pgs package use the "new" style format, so I guess that an old version of Delphes will not work with it.
Can you confirm?

>Is there a way to install a specific older version of Delphes 3 within Madgraph, similar to the generic "install Delphes" command?

No. Looks like you did the correct way. But as said above, I think that your version of pythia-pgs and Delphes are just not compatible.

Cheers,

Olivier

Asher Berlin (asherberlin) said : #2

Thanks for the quick response Olivier. I'm curious to see what Pavel think of this, but in the mean time, do you know if its possible to integrate an independent download of pythia into Madgraph (similar to what I've done with Delphes so far)? Maybe then I could just utilize whichever version that is compatible with Delphes v3.0.9.

If you have bazaar install on your machine, you can install whatever version.

See information here:
https://code.launchpad.net/pythia-pgs-for-mg

I guess that revision 37 should be compatible
(bzr branch lp:pythia-pgs-for-mg - r 37)

Cheers,

Olivier
On Jun 10, 2014, at 5:21 AM, Asher Berlin <email address hidden> wrote:

> Question #250005 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/250005
>
> Asher Berlin posted a new comment:
> Thanks for the quick response Olivier. I'm curious to see what Pavel
> think of this, but in the mean time, do you know if its possible to
> integrate an independent download of pythia into Madgraph (similar to
> what I've done with Delphes so far)? Maybe then I could just utilize
> whichever version that is compatible with Delphes v3.0.9.
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Asher Berlin (asherberlin) said : #4

Ok. Thanks Olivier.

Pavel Demin (pavel-demin) said : #5

Hi Asher,

Sorry for not responding sooner (just back from vacations).

I can confirm that Delphes v3.0.9 can't read STDHEP files generated by the latest pythia-pgs version.

I think that it should be possible to take the STDHEP reader from the latest Delphes version and add it to Delphes 3.0.9.

Could you try to put the following two files to the Delphes/classes directory and rebuild Delphes?

https://cp3.irmp.ucl.ac.be/projects/delphes/export/1394/trunk/classes/DelphesSTDHEPReader.h
https://cp3.irmp.ucl.ac.be/projects/delphes/export/1394/trunk/classes/DelphesSTDHEPReader.cc

Regards,

Pavel

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