Search found 4 matches

by ldarme
12. Apr 2018, 15:12
Forum: SPheno, FlavorKit
Topic: Yukawa couplings with extra vector-like leptons
Replies: 1
Views: 1503

Yukawa couplings with extra vector-like leptons

Dear Florian, I am analysing a simple toy model where new vector-like leptons could have a sizeable mixing with the Standard model ones. Eventually, Spheno always outputs the exact masses for the Standard Model leptons, hence I would expect that the leptons Yukawa couplings are determined on-the-fly...
by ldarme
27. Mar 2017, 11:58
Forum: SPheno, FlavorKit
Topic: Normalisation B to Kll - FlavorKit
Replies: 4
Views: 3192

Re: Normalisation B to Kll - FlavorKit

Dear both,

Great! Thanks a lot for your quick answers and for the awesome code.

Cheers,
Luc
by ldarme
22. Mar 2017, 15:14
Forum: SPheno, FlavorKit
Topic: Normalisation B to Kll - FlavorKit
Replies: 4
Views: 3192

Normalisation B to Kll - FlavorKit

Dear Florian, I know you did some changes for this particular decay a year ago, but I am wondering if the normalisation of the contribution for the C7 coefficients does not miss an (4pi alpha) factor. The reason is the following: - FlavorKit uses CC7 for both B->Kll (based on 1308.1501, correcting t...
by ldarme
9. Jan 2017, 15:21
Forum: SPheno, FlavorKit
Topic: Numerical divergences in Box Diagrams for FlavorKit
Replies: 1
Views: 1689

Numerical divergences in Box Diagrams for FlavorKit

Dear Florian, When using FlavorKit to calculate low energy observables, numerical divergences are reported in the Message.out file from SPheno. They concern D00check, D0C0check and B0. They seem to be related to box loops involving the pseudo-scalar eigenstates. I can see them appearing in different...