Speaker
Andrea Quadri
(INFN Milan)
Description
We present the tools needed to carry out the all-orders renormalization of some classes of EFTs directly relevant to BSM physics. The approach is based on the introduction of dynamical gauge-invariant fields in loop integrals. New relations among Green's functions arise, encoded in some novel differential equations. In favorable cases these equations lead to complete resummation of the dependence of amplitudes on the BSM parameters (at fixed loop order). New phenomena arise with a qualitativey different behaviour of
the amplitudes, evaluated in the standard linearized approximation in the BSM parameters, compared with the resummed amplitudes.
