Speaker
Ulserik Moldanazarova
(University of Liverpool)
Description
In this talk we will discus the flavour violating four-fermion interactions and dipole interaction in models with extra heavy particles whose masses are
equal to or above the electro-weak scale.
We use the Becchi-Rouet-Stora-Tyutin symmetry to constrain tree-level couplings to construct perturbatively unitary theories, for which we calculate one-loop corrections.
We focus on the gauge cancellation and give matching results for four-fermion operators in terms of a reduced set of couplings.
As an illustrative example, we will calculate the $\bar{d_i} d_j \to \bar{\ell_i} \ell_i$ process with one extra charged massive boson.
Primary author
Ulserik Moldanazarova
(University of Liverpool)
Co-author
Martin Gorbahn
(University of Liverpool)
