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Poles as the only true resonant-state signals extracted from a worldwide collection of partial wave amplitudes using only one, well controlled pole-extraction method (CROSBI ID 173515)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Hadžimehmedović, Mirza ; Ceci, Saša ; Švarc, Alfred ; Osmanović, Hedim ; Stahov, Jugoslav Poles as the only true resonant-state signals extracted from a worldwide collection of partial wave amplitudes using only one, well controlled pole-extraction method // Physical review. C, Nuclear physics, 84 (2011), 3; 035204-1-035204-15. doi: 10.1103/PhysRevC.84.035204

Podaci o odgovornosti

Hadžimehmedović, Mirza ; Ceci, Saša ; Švarc, Alfred ; Osmanović, Hedim ; Stahov, Jugoslav

engleski

Poles as the only true resonant-state signals extracted from a worldwide collection of partial wave amplitudes using only one, well controlled pole-extraction method

Each and every energy dependent partial–wave analysis is parameterizing the pole positions in a procedure defined by the way how the continuous energy dependence is implemented. These pole positions are, henceforth, inherently model dependent. To reduce this model dependence, we use only one, coupled–channel, unitary, fully analytic method based on the isobar approximation to extract the pole positions from the each available member of the worldwide collection of partial wave amplitudes which are understood as nothing more but a good energy dependent representation of genuine experimental numbers assembled in a form of partial–wave data. In that way, the model dependence related to the different assumptions on the analytic form of the partial–wave amplitudes is avoided, and the true confidence limit for the existence of a particular resonant state, at least in one model, is established. The way how the method works, and first results are demonstrated for the S11 partial wave.

nucleon resonances; poles; Zagreb model

nije evidentirano

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Podaci o izdanju

84 (3)

2011.

035204-1-035204-15

objavljeno

0556-2813

10.1103/PhysRevC.84.035204

Povezanost rada

Fizika

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