$tbW$ Anomalous Couplings in the Two Higgs Doublet Model

Understand

We make a complete one loop calculation of the $tbW$ couplings in the Two Higgs Doublet Model.

• We evaluate both the anomalous couplings $g_L$ and $g_R$ as well as left handed and right handed component of $tbW$.
• The computation is done in the Feynman gauge using the on-shell scheme renormalization for the Standard Model wave functions and parameters.
• We first show that the relative corrections to these anomalous couplings are rather small in most regions of the parameter space.