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Publications de SUBATECH |  |
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Publications de SUBATECH | |
| HAL : in2p3-00272477, version 1 |
| DOI : 10.1016/j.nuclphysbps.2007.10.009 |
| Fiche détaillée |  Récupérer au format |
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| XIV International Symposium on Very High Energy Cosmic Ray Interactions, Weihai : Chine (2006) |
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| Micro-canonical pentaquark production in $e^+e^−$ and pp collisions |
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| F.-M. LiuK. Werner1 |
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| (2008) |
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| The existence of pentaquarks became questionable, because the Θ+ peak is observed in some p+p collisions, but not in e+e− annihilations. People think initial baryon number is necessary to produce pentaquarks. In this paper, we estimate and compare the production of Θ+(1540) and Ξ−−(1860) in e+e− and pp collisions at different energies using Fermi statistical model as originally proposed in its microcanonical form. We find that both Θ+(1540) and Ξ−−(1860) yield more in e+e− at LEP energies than in pp collisions at SPS and RHIC energies, if pentaquarks do exist. Initial baryon number is not necessary for pentaquark production. |
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| 1 : | SUBATECH - Laboratoire SUBATECH Nantes |
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| Thème(s) | : | Physique/Physique des Hautes Energies - Phénoménologie |
| in2p3-00272477, version 1 | |
| http://hal.in2p3.fr/in2p3-00272477 | |
| oai:hal.in2p3.fr:in2p3-00272477 | |
| Contributeur : Dominique Girod | |
| Soumis le : Vendredi 11 Avril 2008, 15:23:35 | |
| Dernière modification le : Vendredi 11 Avril 2008, 15:27:15 | |
