Izlaganje sa skupa

Strange-quark vector current pseudoscalar-meson transition form factors

A.-Z. Dubničková ; Comenius University, Department of Theoretical Physics, Bratislava, Slovak Republic
S. Dubnička ; Institute of Physics, Slovak Academy of Sciences, Bratislava, Slovak Republic
G. Pancheri ; Lab. Nazionali di Frascati dell' INFN, via E. Fermi 40, I-0044 Frascati (Roma), Italy
R. Pekárik ; Institute of Physics, Slovak Academy of Sciences, Bratislava, Slovak Republic

Sažetak

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 ω and φ 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 ω-φ 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.

Ključne riječi

electromagnetic pseudoscalar-meson transition form factors; strange-quark vector current pseudoscalar-meson transition form factors

Hrčak ID:

305643

URI

https://hrcak.srce.hr/305643

Datum izdavanja:

1.3.2004.

Podaci na drugim jezicima: hrvatski

Posjeta: 321 *