On ambiguities and uncertainties in PWA (CROSBI ID 532692)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Švarc, Alfred ; Ceci, Saša ; Zauner, Branimir
engleski
On ambiguities and uncertainties in PWA
Partial wave scattering matrix poles, representing a link between experimental data and quark-model resonant states, contain two sources of ambiguities and uncertainties: fundamental (continuum ambiguities) and factual (quality of input data). Furthermore, two types of scattering matrix singularities are identifed when energy dependence of partial wave data is implemented through a coupled-channel model: bare and dressed Green function poles. Both types of uncertainties, for both type of poles, are strongly reduced by extending the data base in the direction of increasing the number of accessible and utilized channels. As we strongly suspect that the quality of data in one channel is of less importance then the overall number of used channels, new measurements in inelastic meson-nucleon sector are recommended, and recognized as a task of prime importance.
ambiguities; uncertainties; PWA
eConf Archive = Electronic Conference Proceedings Archive
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Podaci o prilogu
663-673.
2008.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of the 11th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon : MENU 2007
Krewald, S. ; Machner, H.
Lahti: SLAC
Podaci o skupu
Nepoznat skup
pozvano predavanje
29.02.1904-29.02.2096