Working Group 3

• Topic 1 : Survey of the exsisting/missing models.

• Topic 2 : Application of the Les Houches validation scheme. We would like to perform a 4 star comparison between FR and LH for the following models:
  • I. MSSM full validation.
    • Description: validation of cMSSM with LH+CH, FR+WO and the WO,SH stock versions.
    • Names: Benj, Sasha, Steffen, Christian.
    • Status: Several processes have discrepancies. Sasha is looking into the CH files. Here is an example
    • To-do: get final agreeement.
  • II. Randall-Sundrum.
    • Description: validation of RS between MG-stock, FR+CH, FR+WO.
    • Names: Neil, Sasha, Priscila, Christian.
    • Status: All model files available. Next step is comparison with MG-stock implementation of RS by Priscila and Qiang in v4. Finally, validation with FR+MG5 will be done.
    • To-do: get final agreeement.
  • III. Walking Technicolor.
    • Description: validation of WT FR vs LH versions with CalcHEP and MG and more...
    • Names: Sasha, Fabio, Claude.
    • Status: To be started. FR version to be validated with the LH version in CH. Paper SB, and Francesco Sannino (​arXiv:0809.0793 [hep-ph]).
    • To-do: get final agreeement.
  • IV. Little Higgs with T-parity.
    • Description: validation of LHwT FR vs LH versions with CalcHEP and MG and more..
    • Names: Fabio, Sasha, Celine, Claude, Christian.
    • Status: To be started. The LanHEP sources are available by Sasha. Here is the CalcHEP implementation: ​http://hep.pa.msu.edu/LHT/lht.zip An implementation is also available in WHIZARD.
    • To-do: get final agreeement.
  • V. Lepto-Quarks.
    • Description: validation of LHwT FR vs LH versions with CalcHEP and MG and more..
    • Names: Fabio, Sasha, Claude, Christian.
    • Status: To be started. Lepto-Quarks : FR version to be validated with the LH version in CH. hep-ph/0502067.To validate this model we need a FR implementation of the Lagrangian in the paper above and its export into, let's say, MG5. Complete version of the CH implementation(including SU(3)xSU(2)xU(1)) is ready and will be available. model files.
    • To-do: get final agreeement.
  • VI. Background field method.
    • Description: Implementation of the background field method model and comparison with the usual approach in the SM.
    • Names: Fabio, Benj, Celine.
    • Status: Fermion, gauge and Higgs sector implemented.
    • To-do: Ghosts to be fixed, validation to be done (vs. FeynArts).

• Topic 3 : Structure of the FeynRules web-based Database

• Automatic testing/validating suite from the web interface. A web page where a user upload the model file(s), ticks the MC that wants to be used, and the model gets validated directly (FR authors)...This could be an automatic star rating and would solve the issue of who is giving the stars...Also solve the issue of releasing a testing suite in Mathematica.