configuring MadSpin for decay of gluinos

Asked by Arka Santra on 2019-08-07

Hello,
  I want to use MadSpin to decay gluinos. This is the MadSpin command I am using:

    define all = e+ e- mu+ mu- ta+ ta- u u~ d d~ c c~ s s~ b b~ ve vm vt ve~ vm~ vt~
    decay go > jb jb n2
    decay n2 > all all n1

  https://github.com/asantra/SquarkProduction/blob/master/MadGraphControl_SimplifiedModel_onestepN2_ZN1.py#L103-L107

But while running for gluino mass 600 GeV, mN1 560 GeV and mN2 580 GeV, I am getting this error:

Command "import command madspin_decay_cmd" interrupted in sub-command:
generate 13:03:00 "decay_events Test" with error:
generate 13:03:00 ZeroResult : No Phase Space. Please check particle masses.
generate 13:03:00
generate 13:03:00 Please report this bug on https://bugs.launchpad.net/mg5amcnlo
generate 13:03:00 More information is found in '/afs/cern.ch/work/a/asantra/public/GenerateN2ZN1/Run/PROC_MSSM_SLHA2_3/Test_tag_2_debug.log'.
generate 13:03:00 Please attach this file to your report.

The debug log is kept here:
https://github.com/asantra/SquarkProduction/blob/master/Test_tag_2_debug.log

and the log of the run is here:
https://github.com/asantra/SquarkProduction/blob/master/log.generate_600_560_50Events

I will be grateful if you help me to solve the issue.

Thank you very much,
Arka

Question information

Language:
English Edit question
Status:
Answered
For:
MadGraph5_aMC@NLO Edit question
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Last query:
2019-08-07
Last reply:
2019-08-07

Hi,

Are you sure that such decay is valid?
decay go > jb jb n2

(this on top of the comment of the other thread, in particular what is jb)

Cheers,

Olivier

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