Problem using goldtino UFO

[Antonio Delgado]

Hi,

I have tried to use the grativino UFO (http://feynrules.irmp.ucl.ac.be/wiki/goldstino) with madgraph 2.6.5 and I get the following error when I try the command generate p p > x1+ x1- , x1+ x1- > w+ w- gld gld.

The error I get on screen is:

Error when reading /Users/antonio/software/test/SubProcesses/P2_x1px1m_wpwmgldgld/G1/results.dat

I am attaching the logs.

In the file results.dat there is a single line:

"antonios-imac:G1 antonio$ more results.dat
end code not correct 1"

[Olivier Mattelaer (olivier-mattelaer)]

Hi,

So this does not seems to be a model and/or bug in MG5aMC

generate p p > x1+ x1-
add process x1+ x1- > w+ w- gld gld

This syntax is valid but when you do your computation at LHC the second process crashes since the PDF set does not have any x1- x1+ inside the PDF and therefore it leads to a crash.

I guess that what you want is either
generate p p > x1+ x1- > w+ w- gld gld
(which is a syntax which can cause issues)
or
generate p p > x1+ x1-, x1+ > gld w+, x1- > gld w-

Cheers,

Olivier