Speaker
Description
The renormalization in models with particle mixing is still not completely understood, as such there are many renormalization schemes. Most of the difficulty revolves around gauge-independent and numerically stable renormalization of the mixing. In our previous work we have proposed an On-Shell and all-order renormalization scheme for fermions that trivially satisfies many of the needed mixing renormalization requirements. Currently we are working on extending the fermion approach to scalar sectors. At 1-loop the renormalization scheme seems to be easily carried over, however, when considering higher orders in perturbation theory, renormalization of non-physical scalar sectors becomes non-obvious. In this talk we present the progress so far and current obstacles.
