Phenomenology of Padé approximants: the case of |Vub| from B to pi and B_s to K
Padé approximants provide an excellent toolkit for studying hadronic form factors. They are not only user-friendly but also provide a handle on the approximation error. We will exemplify their use by revisiting the determination of the Cabibbo-Kobayashi-Maskawa parameter from exclusive semileptonic -meson decays. A brief outlook on extensions to that method will also be discussed.
*Wednesday, 22nd June 2022, 14:30 — Sala Wataghin *