Flavour physics parameters from data and unitarity

Details Flavour physics parameters from data and unitarity Flavour physics parameters from data and unitarity

2011-08-03

arxiv.org/abs/1108.1144v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

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 $D\rightarrow \pi l \nu$ and $D\rightarrow K l\nu$ decays.

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