generate particles with different definition of helicity

You need to redefine the file
Source/DHELAS/aloha_functions.f
and/or the files
?XXXXXXX.f (if you are not using UFO Model)

Cheers,

Olivier

On Jun 11, 2014, at 8:32 AM, teddym <email address hidden> wrote:

> New question #250084 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/250084
>
> Hi:
> In the MG5, the helicity is defined as the projection of spin at the direction of momentum. If I want to redefine the helicity as the projection of spin at some other direction, what do I need to change in the code of MG5?
>
>
> Thanks
>
>
>
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Thanks very much!
 I've redefine the wavefunction of fermion for both flow-in and flow-out case in file aloha_functions.f.
However, there are some mistakes I need to locate them.
So I want to add some print sentence, like

"
 if ( ........ ) then
    write(6,*) " **** "
 endif

"

But it seems that when generating the events these message would not print out, How should I make some change to make the program print these message?

Thanks!

They are printout! but not in the shell but in some log file (important since you can have thousands of fortran jobs running in parralel)

You can access all those log file from the html.
click on the cross-section.
then click on the link on the right of any of the GX.
and you have the file where that information is printed.

Cheers,

Olivier