Speaker
Fuensanta Vilches Bravo
(Departamento de Física Teórica y del Cosmos, Universidad de Granada)
Description
We propose an efficient method to perform on-shell matching calculations in effective field theories. The standard off-shell approach to matching requires the use of a Green's basis that includes redundant and evanescent operators. However, on-shell matching allows to perform the matching directly to the physical basis. Our proposal is based on a numerical solution of the corresponding on-shell matching equations. The use of rational on-shell kinematics ensures an exact analytic solution despite the numerical procedure. We present the algorithm and some further applications, such as the automation of the Green’s basis reduction or the obtaining of evanescent contributions.
