| Autor: |
Barmin, V.V., Barylov, V.G., Borisov, V.S., Davidenko, G.V., Dolgolenko, A.G., Guaraldo, C., Matveev, V.A., Mirosidi, G.S., Myklebost, K., Olsen, M., Petrascu, C., Shebanov, V.A., Shishov, N.N., Sibirtsev, A.A., Sokolov, L.I., Volkov, B.S., Zombkovskaya, N.K. |
| Zdroj: |
Nuclear Physics A; February 2001, Vol. 683 Issue: 1-4 p305-321, 17p |
| Abstrakt: |
Hyperon production mechanisms in antiproton annihilation on nuclei at low energy were investigated by using 7.8×105annihilations events in the Xe bubble chamber DIANA at Pp̄≤0.9GeV/c. The full kinematical reconstruction of the two-body secondary hyperon production reactions KN→Λπ0and ωp→K+Λwas performed and it was found that most of hyperons (about 70%) are produced via the reaction KN→YX, while the remaining ones come mainly from the ωN→KYXprocess, in agreement with the predictions of the cascade models. The KN→Λπ0and the ωp→K+Λcross sections were also estimated as further consistency check. The latter, σK+Λω=(0.47±0.25)mb at 〈Pω〉=0.42GeV/c, represents the first experimental determination. |
| Databáze: |
Supplemental Index |
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