Changes between Version 2 and Version 3 of 2HDM


Ignore:
Timestamp:
02/16/10 23:35:49 (8 years ago)
Author:
claudeduhr
Comment:

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  • 2HDM

    v2 v3  
    2626In the current implementation of the 2HDM into FeynRules, the user has to provide numerical values for all the lambda_i parameters in the Higgs basis, together with the charged Higgs mass. The other parameters of the potential, such as the \mu_i, are then deduced from these inputs. Contrary, the T matrix must be calculated externally. This, together with the change of basis required if the user wants to provide potential parameters and Yukawa coupling values in bases different from the Higgs basis, as it is often the case, can be done using the ''TwoHiggsCalc'' calculator introduced for the original implementation of the 2HDM in MadGraph. This code has been modified to produce a parameter file compatible with the present implementation. This calculator can also be used to calculate the required Higgs boson tree-level decay widths. It can be found at 
    2727 
    28 ["http://cp3wks05.fynu.ucl.ac.be/Calculators/TwoHiggsCalc/index.html"] 
     28http://cp3wks05.fynu.ucl.ac.be/Calculators/TwoHiggsCalc/index.html 
    2929 
    3030=== References === 
     
    3333=== Model files === 
    3434   * [http://europa.fyma.ucl.ac.be/~duhr/twiki/pub/Main/2HDM/2HDM.tar.gz 2HDM.tar.gz]: This archive contains all the model files. Should be expanded in the FR model directory.  
    35    * [http://europa.fyma.ucl.ac.be/~duhr/twiki/pub/Main/2HDM/HBreal.rst HBreal.rst]: Additionnal restriction file to define all parameters as being rule, to be used, for example, with !CalcHEP<a rel="nofollow" href="http://feynrules.phys.ucl.ac.be/edit/Main/CalcHEP?topicparent=Main.2HDM" title="Create this topic">?</a>  
     35   * [http://europa.fyma.ucl.ac.be/~duhr/twiki/pub/Main/2HDM/HBreal.rst HBreal.rst]: Additionnal restriction file to define all parameters as being real, to be used, for example, with !CalcHEP<a rel="nofollow" href="http://feynrules.phys.ucl.ac.be/edit/Main/CalcHEP?topicparent=Main.2HDM" title="Create this topic">?</a>  
    3636 
    3737=== Instructions === 
     
    4444   * [http://europa.fyma.ucl.ac.be/~duhr/twiki/pub/Main/2HDM/2HDM.nb 2HDM.nb] : This is an example Mathematica® notebook that loads the model and calculates Feynman rules.  
    4545   * [http://europa.fyma.ucl.ac.be/~duhr/twiki/pub/Main/2HDM/param_card_FR.dat param_card_FR.dat] : This is an example of LHA parameter file to be used with this model. It also contains the defalut values used for validation.  
    46 === <a name="Validation"></a><a name="_Validation"></a> <a name="Validation"></a> Validation === 
     46=== Validation === 
    4747   * [http://europa.fyma.ucl.ac.be/~duhr/twiki/pub/Main/2HDM/PSPoints.jpg Phase space point comparison with stock version]  
    4848   * [http://europa.fyma.ucl.ac.be/~duhr/twiki/pub/Main/2HDM/TANU.jpg Cross section comparison, for tau/nu_tau initial state]