Hi Florian, Well, I was using before version 4.12.0 and I was getting, for the same input: Spheno: 26 9.78232041E-14 # Brmu->egamma 29 6.08765204E-16 # Brmu->3e and SARAH: 701 1.45868469E-16 # muegamma 901 1.95784487E-18 # mu3e But now, with version 4.12.3 and the same input, I am getting: 701 8.212...

Hi Florian, We have been using SARAH with SPheno and SPheno alone to calculate some LFV processes. We observed some differences between them and when checking for a single point, it writes the output without complaints, but then in Messages.out we discovered a lot of problems like: IIp called with s...

Hi Florian, I think it could be correct, if you use the function ATan which gives results between (-Pi/2 and Pi/2), or something similar. The only thing is that you should do ATan ( ZH[2,2]/ZH[1,2]) as ZH[1,1] is (-Sin(alpha) ). Thanks a lot for your help. Oscar

Indeed, this is exactly what happens. It is not enough to use ArcCos(Cos(A)) to obtain A, apart from the global sign problem. I just plotted (SCALARMIX[1, 2], Cos[HMIX[11]]) and (SCALARMIX[1, 1], Sin[HMIX[11]]) and this is what I get: So, with the alpha SPheno gets, I can not reproduce the mixing ma...

Hi Florian, > Hi Oscar, > > thank you for your message. First, just to clarify: you refer to the > value \alpha written in HMIX 11 in the SPheno.spc? Yes, this is the value we refer to > > This value is calculated is (see parameters.m under "scalar mixing angle") > > DependenceSPheno -> ArcCos[ZH[1,...