Unified Description of Kaon Electroweak Form Factors

Abstract

A calculation of the semi--leptonic decays of the kaon ($K_{l3}$) is presented. The results are direct predictions of a covariant model of the pion and kaon introduced earlier by Ito, Buck, Gross. The weak form factors for $K_{l3}$ are predicted with absolutely no parameter adjustments of the model. We obtained for the form factor parameters: $f_{-}(q^2=m_l^2)/f_{+}(q^2=m_l^2)=-0.28$ and ${\lambda }_{+}$= 0.028, both within experimental error bars. Connections of this approach to heavy quark symmetry will also be discussed.

RevTeX, 7 pages, 4 postscript figures

References in corpus (1)

• Semileptonic Meson Decays in the Quark Model: An Update

Cited by in corpus (8)

• Kaon electroweak form factors in the light-front quark model
• Leptonic and Semileptonic Decays of Pseudoscalar Mesons
• K_{l3} transition form factors
• K_{l 3} and π_{e 3} transition form factors
• From the Feynman-Schwinger representation to the non-perturbative relativistic bound state interaction
• Kaon semileptonic decay (K_{l3}) form factors from the instanton vacuum
• Contribution of σ-meson exchange to elastic lepton-proton scattering
• Relations between the K_{l3} and tau --> K pi nu_tau decays