Flavour physics parameters from data and unitarity

Abstract

The aim of the paper is to show that the nowadays experimental data from superallowed nuclear and neutron $\beta$ decays, and from leptonic and semileptonic decays allow the finding of the most probable numerical form of the KM matrix, as well as the determination of decay constants, $f_P$, and of various form factors $f_{+}(q^2)$, by using a genuine implementation of unitarity constraints. In particular this approach allows the determination of semileptonic form factors that is illustrated on the existing data of $D\to \pi l\nu$ and $D\to Kl\nu$ decays.

Comments: 28 pages. arXiv admin note: substantial text overlap with arXiv:1010.3939