Naslov
Multi Resonance Contribution to the Eta Production in Proton-Proton Scattering

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

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

Izvornik
Proceedings of the N*2004 Workshop on the structure of Excited Nucleons / Bocquet, J. ; Kusnetzov, V. ; Rebreyand, D. - Singapur : London : München : Ženeva : Tokyo : Hong Kong : Taipei : Peking : Šangaj : Tianjin : Chennai : World Scientific Publishing, 2005, 333-337

Skup
N*2004 Workshop on the structure of Excited Nucleons

Mjesto i datum
Grenoble, Francuska, 24.03.2004. - 27.03.2004

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Meson production; nucleon-nucleon interaction; eta meson; inelastic proton scattering

Sažetak
Two body scattering amplitudes, obtained in the unitary, coupled channel model, have been used in the few-body analysis. The simplest two-body process that can be completely determined using the two-body amplitudes is p p --> p p eta. It has been shown that the experimental data far from threshold are well described using S-waves only. The choice of final state interaction model is vital, especially for the pp subsystem. We apply the factorization approximation for the three body final state interaction and use the two body Jost functions in the low energy effective range approximation. Contrary to recent models which demand a strong contribution from rho meson exchange, it has been shown that the destructive interference between pi and eta depicts the data quite well.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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