Hi Olivier, I have implemented a new physics model in feynrules. Now, I am testing some of the SM processes. Two exercies ============ Exercise-1 ================== MG5_aMC> generate p p > z z INFO: Checking for minimal orders which gives processes. INFO: Please specify coupling orders to bypass this step. Command "generate p p > z z " interrupted in sub-command: "generate p p > z z" with error: KeyError : '1' Please report this bug on https://bugs.launchpad.net/mg5amcnlo More information is found in 'MG5_debug'. Please attach this file to your report. Exercise-2 ================ MG5_aMC> generate p p > z z QED<=99 INFO: Trying process: g g > z z QED<=99 @1 INFO: Trying process: u u~ > z z QED<=99 @1 INFO: Process has 2 diagrams INFO: Trying process: u c~ > z z QED<=99 @1 INFO: Trying process: c u~ > z z QED<=99 @1 INFO: Trying process: c c~ > z z QED<=99 @1 INFO: Process has 2 diagrams INFO: Trying process: d d~ > z z QED<=99 @1 INFO: Process has 2 diagrams INFO: Trying process: d s~ > z z QED<=99 @1 INFO: Trying process: s d~ > z z QED<=99 @1 INFO: Trying process: s s~ > z z QED<=99 @1 INFO: Process has 2 diagrams INFO: Process u~ u > z z added to mirror process u u~ > z z INFO: Process c~ c > z z added to mirror process c c~ > z z INFO: Process d~ d > z z added to mirror process d d~ > z z INFO: Process s~ s > z z added to mirror process s s~ > z z 4 processes with 8 diagrams generated in 0.127 s Total: 4 processes with 8 diagrams ================================= For the Error in Ex-1, i have followed this FAQ https://answers.launchpad.net/mg5amcnlo/+faq/2460 i hope, i have correctly specified the orders for all the parameters. Please suggest where could be other possible mistakes. Regards, Shiba

MadGraph5_aMC@NLO

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