K(L4) DECAY ANALYSIS IN A PARAMETER-FREE RELATIVISTIC MODEL

The dimensionless form factors f(s)(0), g(0), h(0) and lambda which account for almost all the microscopic details of the K(l4) decay are computed in an integrated QCD oriented Bethe-Salpeter framework, where all the free parameters involved in the formalism are fixed by the best fit with the Hadron mass spectroscopy, so that for the present evaluation we have a parameter-free model. The values of the form factors so obtained are in good agreement with the experimental values and the agreement is comparable with the recent similar calculations using large-N(c) limits in chiral QCD theory.