Loop level

[Astro]

Hi Florian,

I read in the manual of the FlavorKit that the Wilson coefficients are calculated on one 1- loop level ..
I wonder can calculations made also on 2-loop level, for instance get two penguins in b -> s l+ l- decay ?

Best.

[FStaub]

Of course, one can do these calculations (results are known for the SM and MSSM), but not in a fully automatised way with SARAH.

Cheers
Florian

[Astro]

Hi,

Of course, one can do these calculations (results are known for the SM and MSSM),

You mean i can generate in Flavour Kit two- loop diagrams ? i think i have to modify the 2d2L.m file , should i use Filters or what ?
because in default it generates only one loop - diagrams ..

Thanks ..

[FStaub]

No. As I have written, these calculations are not possible with SARAH. You need to sit down and do them by your own.
I just meant that they exist for a few models in literature, i.e. they are not impossible in general. Of course, they are far away from being easy.

Best,
Florian

[Astro]

Ok, thanks ..

Bests.