MadGraph5_aMC@NLO

Is there gravitino in mssm model?

Asked by Ezequiel Alvarez

Hi All,

I'm trying to implement a process in mssm model with the gravitino as the massless LSP. I cannot find any particle with the code 1000039 in the mssm model

Is there any other particle to use instead? Or something else that am I missing?

Thanks, Ezequiel.

Question information

Language:
English Edit question
Status:
Answered
For:
MadGraph5_aMC@NLO Edit question
Assignee:
Kentarou Mawatari Edit question
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Kentarou Mawatari (kentarou-mawatari) said : 		#1

Hi Ezequiel,

The default MSSM model in MG5_aMC does not have the gravitino (1000039).
What kind of gravitino processes do you consider?

We have studied gravitino(goldstino) LSP scenarios in MG5_aMC, e.g.

http://arxiv.org/abs/1206.7098
http://arxiv.org/abs/1310.0018

and I can provide our private UFO model (mssm+goldstino) if you need.

Best regards,
Kentarou

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Ezequiel Alvarez (sequi76) said : 		#2

Hi Kentarou,

thanks for your clarification, answer and offering.

I'm trying to play with the model that produces the excess in the Z-peak recently observed by ATLAS 1503.3290, for instance their fig. 1b. It looks to me that your model would fit, using the gravitino as the LSP with quite small mass.

I'd appreciate if you can share me the UFO. Thank you so much, cheers, Ezequiel.

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Provide an answer of your own, or ask Ezequiel Alvarez for more information if necessary.

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