Pregled bibliografske jedinice broj: 18290
The importance of the nucleon-nucleon correlations for the eta-alpha S-wave scattering length, and the pi0-eta mixing angle in the low-energy eta-alpha scattering length model
The importance of the nucleon-nucleon correlations for the eta-alpha S-wave scattering length, and the pi0-eta mixing angle in the low-energy eta-alpha scattering length model // Journal of Physics G: Nuclear and Particle Physics, 25 (1999), L35-L41 doi:10.1088/0954-3899/25/6/101 (podatak o recenziji nije dostupan, pismo uredniku, znanstveni)
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Naslov
The importance of the nucleon-nucleon correlations for the eta-alpha S-wave scattering length, and the pi0-eta mixing angle in the low-energy eta-alpha scattering length model
Autori
Ceci, Saša ; Hrupec, Dario ; Švarc, Alfred
Izvornik
Journal of Physics G: Nuclear and Particle Physics (0954-3899) 25
(1999);
L35-L41
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, pismo uredniku, znanstveni
Ključne riječi
eta-alpha scattering length; pi0-eta mixing angle
Sažetak
Using the new set of dd-->eta alpha near- threshold experimental data, the estimate of the importance of the nucleon-nucleon correlations for the eta-alpha S-wave scattering length in the multiple scattering theory is obtained using the low-energy scattering length model. The contribution turns out to be much bigger then previously believed. Th epi0-eta mixing angle is extracted using the experimental data on the dd-->eta alpha and dd- ->pi0 alpha processes. The model is dominated by the subthreshold extrapolation recipe for the eta-alpha scattering amplitudes. When the recipe is chosen, the model is completely insensitive to the eta-alpha parameters for the subthreshold value of the eta cm momentum p(eta)2= -(0.46)fm-2. Provided that the subthreshold extrapolation is correct, a good estimate of the pi0-eta mixing angle is obtained if the experimental cross sections for the dd-->pi0 alpha reaction at the corresponding deuteron input energy is taken from the literature.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Poveznice na cjeloviti tekst rada:
Pristup cjelovitom tekstu rada doi fulir.irb.hr
arxiv.org
arxiv.org
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
