Changes between Version 4 and Version 5 of SchoolKias/FeynRules


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Timestamp:
Oct 23, 2011, 8:54:55 AM (13 years ago)
Author:
Benjamin Fuks
Comment:

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  • SchoolKias/FeynRules

    v4 v5  
    77The !FeynRules (not up-to-date) manual: [http://feynrules.irmp.ucl.ac.be/attachment/wiki/WikiStart/Manual_a4.pdf download here].
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     9The slides associated to the lectures: [http://cp3.irmp.ucl.ac.be/~bfuks/fuks_kias.pdf download here].
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    1012== Model files ==
    11 During the lectures, you will implement from scratch a model for a supersymmetric (SUSY) QCD theory. The implementation will be performed in three different ways which will illustrate the different features of !FeynRules.
     13During the lectures, a supersymmetric (SUSY) QCD theory is implemented.
     14 * The gauge group is SU(3)_c (as in QCD)
     15 * The field content is given by
     16   * Three generations of up-type quarks
     17   * Three generations of up-type left-handed squarks
     18   * Three generations of up-type right-handed squarks
     19   * A gluon
     20   * A gluino
     21 * The free parameters of the theory consists in
     22   * The masses of the particles
     23   * The strong coupling constant (both gs and alpha_s)
     24 * For the Lagrangian, see the slides.
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    13  * The good old way, using four-component fermions and scalar fields (not the best way for SUSY theories).
    14  * A better approach, using two component fermions instead of four-component ones
    15  * The best method for SUSY: using superfields.
     26The implementation has been performed in three different ways which will illustrate the different features of !FeynRules.
     27 * The good old way, using regular fields including a four-component representation for the fermions: [/attachment/wiki/SchoolKias/FeynRules/susyqcd_dirac.fr susyqcd_dirac.fr]
     28 * A better approach, using regular fields including a two-component representation for the fermions: [/attachment/wiki/SchoolKias/FeynRules/susyqcd_dirac.fr susyqcd_weyl.fr]
     29 * The best method for supersymmetric theoric, using superfields: [/attachment/wiki/SchoolKias/FeynRules/susyqcd_dirac.fr susyqcd_sf.fr]
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    17 Before adding the superfields to the model files, you will have to add the charge-conjugate scalar and fermion for the right-handed (s)quark. Since this will not be done during the lectures, you can either do it yourself or download the add-on to merge to your model file [/attachment/wiki/SchoolKias/FeynRules/addon.fr here].
     31In the case you want to start from your own Weyl fermion implementation to get the superfield implementation, you will have to replace right-handed Weyl quarks and right-handed squarks by their charge-conjugate counterparts. Since this will not be performed explicitly during the lectures, you can either do it yourself or download the add-on to merge to your model file [/attachment/wiki/SchoolKias/FeynRules/addon.fr here].
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