FIZIKA B 13 (2004)  1, 295-304

STRANGE-QUARK VECTOR CURRENT PSEUDOSCALAR-MESON TRANSITION FORM FACTORS

A.-Z. DUBNIČKOVÁ^a, S. DUBNIČKA^b,
G. PANCHERI^c and R. PEKÁRIK^b

^aComenius University, Department of Theoretical Physics, Bratislava, Slovak Republic
^bInstitute of Physics, Slovak Academy of Sciences, Bratislava, Slovak Republic
^cLab. Nazionali di Frascati dell' INFN, via E. Fermi 40, I-0044 Frascati (Roma), Italy

Received 1 December 2003;   Accepted 26 April 2004
Online 22 October 2004

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

PACS numbers: 12.40.Vv, 13.40.Gp
UDC 539.12

Keywords: electromagnetic pseudoscalar-meson transition form factors, strange-quark vector current pseudoscalar-meson transition form factors

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