Problem in calculating Higgs masses

[waqasahmed]

Dear Florian,

Hope you are doing well. We have some problem in calculating the Higg masses. When we run a scan we get negative mass square error. It seems to me and my collaborator Cem that SPheno cannot employ the parameters to calculate the Higgs masses in some routines. Due to this error our, about 90% of the solutions are killed. I also attached my error file with this post. Can you tell us what is the reason behind this and how we can solve this problem. By the way we are using a model like B-lSSM.

regards,
waqas

[FStaub]

Hi,

I'm not sure, if this is really a problem with SPheno or with your input parameters. It can easily happen that some scaalars get tachyonic in this model. The masses are in particular very sensitive on the chosen value of tan(beta') and small changes can have huge effects. See for instance 1112.4600, Fig. 7, 9.

Cheers,
Florian

[waqasahmed]

Dear Florian,

I am studying your paper 170103480 related to non holomorphic MSSM. I have a quick question,

In your paper you have varied non holomorphic A-terms (A-prime terms). . In the code I find mu-prime (MupInput) but can not find A-prime term as an input parameter.

Thank you very much for your time.
Best regards,
Waqas

[FStaub]

The T' terms are paramtrised in the paper by A' times Y.

[waqasahmed]

Dear Florian,
Thanks for your reply. I look the NHSSM model but in Spheno file of this model you defined muprime and A- prime Terms at low scale. I want to know if I defined these things at high scale, what about the RGEs,. Is the code have RGEs from high to low scale for above terms.

Actually I am working on your paper (arXiv:1701.03480v2 )and in this paper you define these things at high scale.

best regards,
Waqas

[FStaub]

Hi,

we used the file attached.

Cheers,
Florian

[waqasahmed]

Dear Florian,

Thanks for your file. The input for T-prime = A-prime * ye which you define in the code as:

{Tep,LHInput[Tep]

I want to vary A-prime as you did your paper. How can I do that?
As I see in SPheno.m file you do not define LHInput[Tep] as an input in MINPAR column. So I want to know if I do not define this parameter as an input parameter how it gets value.

I tried running the code by defining LHInput[Tep] as an input in MINPAR column but the fine tunning with respect to LHInput[Tep] turns out to be zero.

best regards,
Waqas

[FStaub]

Hi,

attached is another version of the SPheno file for a high-scale version of this model. Anyway, you can check http://stauby.de/sarah_wiki/index.php?t ... _in_SPheno how to define boundary conditions in SPheno.

Cheers,
Florian