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