CalcHEP

problem with a constraint parameter in a model taken from SARAH

Asked by Jack Y. Araz

hi

I was trying to calculate h->2*x modes for UMSSM (effective higgs modes included) which taken from SARAH database without changing anything. Whenever I tried to calculate, it gave me same following error in each decay channel:

>>Can not evaluate constrained parameter 'rd'

however I couldn't find this rd parameter anywhere so I couldn't figure out what to fix.

Extra info: I just take the calchep output from sarah with MakeCHep[IncludeEfectiveHiggsVertices->True] and copied model files, i tried both interactive session and blind session but get same error in both cases. there is no rd parameter in any model file. It gives this error when I start numerical session.

Thanks
Jack

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Alexander Pukhov
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Alexander Pukhov (pukhov) said : 		#1

But look at "Constraints" part of the model. (file func?.mdl)
It should contain something like
rd | readSLHA(FILENAME,0)

I guess the problem is caused by absence of FILENAME in a proper place.
Constraints are executed from directory "results". So the file should be disposed
there. But it's not the best way because CalcHEP cleans this directory. Thus I prefer to
dispose the input files in CalcHEP working directory and write in Constraints
  rd | readSLHA("../file",0)

I hope it helps
With best regards
    Alexander Pukhov

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Jack Y. Araz (jackaraz) said : 		#2

Thanks, as you said the problem occurs due to SPheno output of SLHA file, it seems it has some problems while calculating tadpole equations for this specific model.

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Jack Y. Araz (jackaraz) said : 		#3

Hi, im still getting same error from calchep when ever I tried to launch numerical session it cant find the rd parameter. However HiggsBounds, HiggsSignals and MicrOmegas works perfectly fine with my slha file. I'm keeping it in every single file just in case and I also tried to write exact location in funct.mdl but it's still doesnt working. probably I'm missing a small detail but couldn't find what it is. Thanks

Jack

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Best Alexander Pukhov (pukhov) said : 		#4

I think file location is not presented in a proper way.
If you use a local path, then you should take into account that current directory in the time of evaluation of constraints is
"results/"
Best
    Alexander Pukhov

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Jack Y. Araz (jackaraz) said : 		#5

Thanks Alexander Pukhov, that solved my question.