MadGraph5_aMC@NLO

DIS with MadGraph

Asked by Keping Xie

According to the reference for MadGraph5_aMC@NLO, arXiv:1405.0301 [hep-ph], MadGraph can handle pp or e+e-, I wonder wether it is possible to do ep collision such as DIS on HERA. I have see one example on website http://www.desy.de/~obehnke/obehnke140120n.pdf.gz, which deals with e- p > ve t~. But my current job is do the calculation of NLO calculation with heavy quark mass effect. I have not found a good example which can provide a benchmark for me.

Question information

Language:
English Edit question
Status:
Answered
For:
MadGraph5_aMC@NLO Edit question
Assignee:
Rikkert Frederix Edit question
Last query:
Last reply:
Revision history for this message
Rikkert Frederix (frederix) said : 		#1

Hello,

Currently NLO production for DIS processes is not supported. It will be a substantial amount of work to implement this, which is something that we do not have the manpower for.

best regards,
Rikkert

Revision history for this message
zlebcik (radek-zlebcik) said : 		#2

Is there any progress in DIS support for MC@NLO?

Thanks,
Radek

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

No

Olivier

Revision history for this message
zlebcik (radek-zlebcik) said : 		#4

Hello,
what about ep photoproduction, which basically means gamma + p collisions?
I've tried to run it, but got some error at NLO.

We would like to validate the NLO part of the NNLO calculations with another program.
I was hoping that some automatic tool for NLO already exists.

Otherwise, we are forced to use very old programs like Frixione Ridolfi and here only 2jets NLO is implemented.

Do you know about some more modern way?

Thanks a lot.
Radek

Revision history for this message
Rikkert Frederix (frederix) said : 		#5

Dear Radek,

I'm not aware of any recent codes for DIS.
It might be that there is support in Sherpa+OpenLoops -- you'll have to ask them. I'm not sure it is there.

Best,
Rikkert

Can you help with this problem?

Provide an answer of your own, or ask Keping Xie for more information if necessary.

To post a message you must log in.