SARAH MakeCHep help

[MailQuestion]

Dear Florian,
I am trying to find the coupling value of a four-point vertex which contains all scalars. I am using MakeCHep[] to create a lgrng1.mdl file which contains the list of vertices. I am trying to follow the instructions as written in in the manual ( https://arxiv.org/pdf/1503.04200.pdf ) p.110, and trying to remove the auxiliary fields so that I can see the value of the four point vertex printed. I am not sure of the exact command in order to find this.

As an example, in the MSSM, how could I find the Higgs quartic coupling value?

I have tried the combinations:
MakeCHep[NoSplittingWith -> {hh}]
MakeCHep[NoSplittingWith -> {h1}]
MakeCHep[NoSplittingWith -> {h}]
MakeCHep[NoSplittingWith -> {hh[{1}]}]

but in every case I cannot find a "h1 |h1 |h1 |h1" term in the lgrng1.mdl file.
Am I making some simple mistake using this command?

[FStaub]

Hi,

yes, there was a problem. You can either use

Code: Select all

MakeCHep[NoSplittingOnly -> {hh}]

or use the attached patch which should also get

Code: Select all

MakeCHep[NoSplittingWith -> {hh}]

working as expected.

Cheers,
Florian