THDMNLO_FA

This is the project containing all the components that we used to generate 2HDM EW-NLO counter-terms and corresponding Feynman rules in the format of FeynArts model files.

The original files are too messy and un-readable. So here, I try to reorganize them in a form that is easy for reading and for further usage in other models if possible.

To Do List

1. Parallel Calculation in Mathematica

Convention

The sign convention is

• $\eta_G$ = 1
• $\eta_e$ = 1
• $\eta$ = -1
• $\eta_Z$ = 1
• $\eta_\theta$ = -1
• $\eta'$ = 1
• $\eta_Y$ = 1

The definition of above symbol is according to arXiv:1209.6213

Renormalization Scheme:

Counter terms and Renormalization constants are calculated and defined according to KOSY scheme (Phys.Rev.D 70(2004)115002)

Usage

• Copy all the .mod files in Release to some specific place where FeynArts can read.
• Do whatever you want in FeynArts.
  • When loading .mod files, there are several restrictions:
    • Load THDM_EW_Basic (or THDM_EW_BasicQCD) first,
    • Load THDM_NLO_EWRCs before THDM_NLO_ScalarRCs
    • Load any one of the THDM_NLO_FFSI, THDM_NLO_FFSII, THDM_NLO_FFSFL, THDM_NLO_FFSLS before THDM_NLO_ScalarRCs

If you want to regenerate all the THDM part model files: (in this way you may modify some part of the source code to accommodate your conventions or even change to your own models)

• Before running the notebook, please make two new directories:
  1. LagrangianData
  2. VertexRawData
• Running the notebook.
  • It will generate relevant model files in the ModelFiles directory
• Use these model file together with those in Template directory in FeynArts

Contributors

• @HanYuanyuaner Han Yuan
• @ycwu1030 Yongcheng Wu

Citation

If you use this work, please cite: arXiv:1808.02037