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On ambiguities and uncertainties in PWA (CROSBI ID 532692)

Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija

Švarc, Alfred ; Ceci, Saša ; Zauner, Branimir On ambiguities and uncertainties in PWA // Proceedings of the 11th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon : MENU 2007 / Krewald, S. ; Machner, H. (ur.). Lahti: SLAC, 2008. str. 663-673

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

Povezanost rada

Fizika