Cannot generate NLO events

[Waleed]

Hello Madgraph experts,

I am new to Madgraph, and i want generate some SM processes in NLO accuracy, for example the process

"q qbar -> z z -> mu- mu+ mu- mu+", so i did the following:

$ import mode loop_sm
$ generate p p > z z [QCD]
$ output testprcocess
$ launch -m

and have edited the madspin card, so that the z boson decays only to mu- mu+ pairs, but i get this error "log file attached"

 Soft tests done for (Born) config 1
 Failures: 31
     Soft test 4 FAILED. Fraction of failures: 0.31

 No collinear test for massive j_fks
Error detected in "launch auto -m"
write debug file /home/user/NEW/MG5_aMC_v2_2_3/testprocess/run_01_tag_1_debug.log
If you need help with this issue please contact us on https://answers.launchpad.net/madgraph5
aMCatNLOError : Some tests failed, run cannot continue.
        Please check that widths of final state particles (e.g. top) have been set to 0 in the param_card.dat.
quit
INFO:

Could you please help me??!!

Thank You

[marco zaro (marco-zaro)]

Hi,
I cannot reproduce your bug with these commands..
Can you please upload the cards (run, param, proc and madspin) that you use for this process?
Cheers,

Marco

[Waleed (wismail)]

Hello,

I have attached the cards for my process, please note that i use Madgraph5 version 2_2_3 ?

Thank You in Advance

[Olivier Mattelaer (olivier-mattelaer)]

Any news Marco?
(please close this bug/change his status if this was handle out of launchpad)

Cheers,

Olivier

[marco zaro (marco-zaro)]

Hi,
sorry for the delay,
can you please also attach the proc_card_mg5 and check if the problem is still there in v 2.3.3?
Thanks,

Marco

[Olivier Mattelaer (olivier-mattelaer)]

OK I guess we were too slow to answer your problem. Sorry for that.

I will close this bug report now.

Cheers,

Olivier