• New SPheno Bug in SARAH 4.10.2

Hi,

I updated to SARAH 4.10.2 and SPheno 4.0.2 today, and there appears to be a regression. The BranchingRatios file no longer compiles do to the following lines:

Code: Select all

gPVP = 0._dp 
gTVP = 0._dp 
BRVP = 0._dp 
Call VPTwoBodyDecay(-1,DeltaM,BMC,BMN,FMLd,FMLe,FMLU,FLxd,FLxe,FMRd,FMRe,             & 
& FMRu,FRxd,FRxe,FMv,MFd,MFd2,MFe,MFe2,MFu,MFu2,MFv,MFv2,MFxd,MFxd2,MFxe,MFxe2,          & 
& MSA,MSA2,MSC,MSC2,MSS,MSS2,MVWm,MVWm2,MVZ,MVZ2,MVZp,MVZp2,MVZpp,MVZpp2,SMC,            & 
& SMP,SMS,ThetaPZ,g1,g2,g3,gU4,gU5,Ye,Yd,Yxd,Yv,Yu,Yxu,Y1d,Y1l,Y2,LAMdd,LAMdduu,         & 
& LAMd1,LAMd2,LAMduud,LAMuu,LAMu1,LAMu2,LAM11,LAM12,LAM22,kap,MUd,MUu,MU1,               & 
& MU2,gPVP,gTVP,BRVP)

! FIXME
! Do i1=1,1
! 0. =Sum(0.(i1,:))
! If (0..Gt.0._dp) 0.(i1,: ) =0.(i1,:)/0.
! End Do

Here, VP is the photon and I suspect this bug might be due do to the photon having its width set to 0 in the particles.m file.

Hi,

I'm confused why there is code to generate the photon decays at all. Is the particle marked by

Code: Select all

Description -> "Photon"

in particles.m? Anyway, I'll change it that decays for massless states are never included.

Cheers,
Florian

I indeed have

Code: Select all

    Description -> "Photon",

in the definition of the symbol for the photon. Probably safer to not have massless states decay in general.

New SPheno Bug in SARAH 4.10.2

New SPheno Bug in SARAH 4.10.2

Re: New SPheno Bug in SARAH 4.10.2

Re: New SPheno Bug in SARAH 4.10.2