pMSSM like boundaries

[MailQuestion]

Hi Florian,

I am trying to write the code for SPheno using SARAH, however I was wondering if it is possible to input using pMSSM type boundary conditions in the high scale model. Specifically, to decouple the first and second generation soft scalar masses from the third generation to input them at a high scale independently.

Thanks

[FStaub]

Hi,

you can input the entire soft matrices at the GUT scale via the blocks MSQ2IN, MSU2IN, etc. in the Les Houches input, e.g.

Code: Select all

Block MSQ2IN #
1 1 1.000E7 #
2 2 1.000E7 #
3 3 1.000E6 #

[MTalz]

Thank you for the reply.

Unfortunately, SPheno does not recognise the input as you have specified in the SLHA file. The numbers I enter do not appear in the mq2GUT block. Are there changes required in the SPheno.m file before generating the SPheno fortran code?

Thank you for your help,

Matthew

[FStaub]

Strange; that should work out of the box. I attach an example in- and output.

Cheers,
Florian

[MTalz]

Thank you, the input was not interpreted properly without the '#' at the end of each line, which has now been added.

Can one calculate the fine-tuning with respect to each of the separate matrix components in the soft matrices?

Thanks

[FStaub]

Hi,

no, for the fine-tuning calculation that won't work. In order to get that, you need to edit the SPheno.m file for the model. You can for instance do something like

Code: Select all

EXTPAR={ ...,
 {101, mq1},
 {102, mq2},
 {103, mq2},
 
 ...}
BoundaryHighScale={
{mq2,0},
{mq2[1,1], mq1^2},
{mq2[2,2], mq2^2},
{mq2[3,3], mq3^2},

};

FineTuningParameters={
...,
{mq1,1/2},
{mq2,1/2},
{mq2,1/2},
..
};

Cheers
Florian