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Publications de l'IPNO |  |
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Publications de l'IPNO | |
| HAL : in2p3-00701457, version 1 |
| DOI : 10.1103/PhysRevC.85.035203 |
| Fiche détaillée |  Récupérer au format |
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| Physical Review C 85 (2012) 035203 |
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| Baryonic resonances close to the (K)over-bar N threshold: The case of Sigma(1385)(+) in pp collisions |
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| G. AgakishievJ. L. Boyard1T. Hennino1T. Liu1E. Morinière1B. Ramstein1 |
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| HADES Collaboration(s) |
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| (2012) |
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| We present results of an exclusive measurement of the first-excited state of the Σ hyperon, Σ(1385)+, produced in p+p→Σ++K++n at 3.5 GeV beam energy. The extracted data allow the detailed study of the invariant mass distribution of the Σ(1385)+. The mass distribution is well described by a relativistic Breit-Wigner function with a maximum at m0=1383.2±0.9 MeV/c2 and a width of 40.2±2.1 MeV/c2. The exclusive production cross section comes out to be 22.27±0.89±1.56−2.10+3.07 μb. Angular distributions of the Σ(1385)+ in different reference frames are found to be compatible with the hypothesis that 33% of Σ(1385)+ result from the decay of an intermediate broad Δ++ excitation at about 2000 MeV/c2. |
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| 1 : | IPNO - Institut de Physique Nucléaire d'Orsay |
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| Thème(s) | : | Physique/Physique Nucléaire Expérimentale |
| in2p3-00701457, version 1 | |
| http://hal.in2p3.fr/in2p3-00701457 | |
| oai:hal.in2p3.fr:in2p3-00701457 | |
| Contributeur : Sophie Heurteau | |
| Soumis le : Vendredi 25 Mai 2012, 14:42:21 | |
| Dernière modification le : Vendredi 25 Mai 2012, 14:43:23 | |
