Naslov
On ambiguities and uncertainties in PWA

Autori
Švarc, Alfred ; Ceci, Saša ; Zauner, Branimir

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 11th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon : MENU 2007 / Krewald, S. ; Machner, H. - Lahti : SLAC, 2008, 663-673

Skup
11th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon

Mjesto i datum
Jülich, Njemačka, 10.09.2007. - 14.09.2007

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
ambiguities; uncertainties; PWA

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
EConf Archive = Electronic Conference Proceedings Archive

POVEZANOST RADA