Strange-Quark Vector Current Pseudoscalar-Meson Transition Form Factors

Abstract

Similarly to the electromagnetic pseudoscalar-meson transition form factors one can define also strange-quark vector current pseudoscalar-meson transition form factors, contributing only to a behaviour of the isoscalar parts of the previous ones. Their explicit form is found by constructing unitary and analytic models of the strange pseudoscalar-meson transition form factors dependent only on $ω$ and $ϕ$ coupling constant ratios as a free parameters. Numerical values of these ratios are then determined from the corresponding pseudoscalar-meson transition form factors by employing the $ω$-$ϕ$ mixing and a special assumption on the coupling of the quark components of vector-meson wave functions to flavour component of currents under consideration.

6 eps figures, Contribution presented at NAPP'03, May 26-31, 2003, Dubrovnik, Croatia