How to load FlavorKit vertex *.m to SARAH, e.g. H2l.m

[User001]

Dear Florian,

I am trying to import a FlavorKit vertex to SARAH as follows, e.g. H2l.m, but final SARAH pdf file does not include H2l vertex.

Could you please help me on this? Thank you very much.

<< /Users/peiwen.wu123/Downloads/SARAH-4.13.0/SARAH.m
<< /Users/peiwen.wu123/Downloads/SARAH-4.13.0/FlavorKit/LFV/Operators/H2l.m
Start["SM"]
ModelOutput[EWSB];
MakeTeX[];

Best regards
Peiwen

——————————————————
Peiwen Wu (吴 培文)
Research Fellow
Korea Institute for Advanced Study (KIAS)
Email (KIAS): pwwu@kias.re.kr
Email (Personal): peiwen.wu123@gmail.com
——————————————————

[FStaub]

Hi,

sorry, but I'm not sure what you want to do. H2l.m corresponds the generic amplitudes which are needed to generate Fortran code in order to calculate the vertex in a given model with SPheno. SARAH only generated the (renormalisble) tree-level Lagrangian from which all information is extracted which are needed for other tools (e.g. SPheno, FeynArts) to perform loop calculations.

Cheers,
Florian

[User001]

Dear Florian,

I was trying to obtain Wilson coefficients at 1-loop level. Now I have learnt that MakeSPheno[] can generate what I need as follows.

<< /Users/peiwen.wu123/Downloads/SARAH-4.13.0/SARAH.m
Start["SM"]
MakeSPheno[];

Then I can find TeX files in:
/Users/peiwen.wu123/Downloads/SARAH-4.13.0/Output/SM/EWSB/TeX/FlavorKit/

However, the PDF generated seems to miss some information, e.g. expression of all couplings \Gamma^{}_{}

I attached several pages of the SM output of Observable_Gamma2Q.pdf, since PDF file cannot be attached.

Could you please have a look and see what the problem might be?

Many thanks.

Best Regards
Peiwen

——————————————————
Peiwen Wu (吴 培文)
Research Fellow
Korea Institute for Advanced Study (KIAS)
Email (KIAS): pwwu@kias.re.kr
Email (Personal): peiwen.wu123@gmail.com
——————————————————

Hi,

sorry, but I'm not sure what you want to do. H2l.m corresponds the generic amplitudes which are needed to generate Fortran code in order to calculate the vertex in a given model with SPheno. SARAH only generated the (renormalisble) tree-level Lagrangian from which all information is extracted which are needed for other tools (e.g. SPheno, FeynArts) to perform loop calculations.

Cheers,
Florian

[Avelino]

The expressions for the couplings are given independently in a different pdf file. You can generate this file by evaluating the commands

ModelOutput[EWSB]

and

MakeTeX[]

after loading your model in SARAH. I believe this is actually explained in SARAH's documentation. You can also have a look at

https://arxiv.org/abs/1503.04200
https://arxiv.org/abs/1507.06349

for two pedagogical introductions to the use of SARAH.

[User001]

The expressions for the couplings are given independently in a different pdf file. You can generate this file by evaluating the commands

ModelOutput[EWSB]

and

MakeTeX[]

after loading your model in SARAH. I believe this is actually explained in SARAH's documentation. You can also have a look at

https://arxiv.org/abs/1503.04200
https://arxiv.org/abs/1507.06349

for two pedagogical introductions to the use of SARAH.

Dear Avelino,

Thank you for the information, but ModelOutput[EWSB] does not include neither coupling names shown in FlavorKit output nor 1-loop vertex Feynman rules.

Best regards
Peiwen

[Avelino]

While it is true that it does not show the coupling name, I think you can easily guess it by looking at the Feynman diagrams. Basically, $\Gamma_{abc}$ is the coupling corresponding to the A-B-C vertex.

[FStaub]

Hi,

Code: Select all

ModelOutput[EWSB]
MakeTeX[FeynmanDiagrams -> False, ShortForm -> True]

should to the trick.

[User001]

Dear Florian,

It works well as you suggested. It helped me a lot.

BTW, could you have a look at another one of my questions posted a few days ago? I am eager to get PreSARAH work normally. Thank you very much.

Topic:
PreSARAH-1.0.3, “Generic” appears in output, no mass/coupling substitution

Hi,

Code: Select all

ModelOutput[EWSB]
MakeTeX[FeynmanDiagrams -> False, ShortForm -> True]

should to the trick.