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Publications de SUBATECH |  |
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Publications de SUBATECH | |
| HAL : in2p3-00682472, version 1 |
| arXiv : 1203.5302 |
| DOI : 10.1103/PhysRevLett.110.042501 |
| Fiche détaillée |  Récupérer au format |
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| Physical Review Letters 110 (2013) 042501 |
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| Non-thermal $p/\pi$ ratio at LHC as a consequence of hadronic final state interactions |
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| J. Steinheimer1J. Aichelin2M. Bleicher1 |
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| (2013) |
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| Recent LHC data on Pb+Pb reactions at sqrt s_{NN}=2.7 TeV suggests that the p/pi is incompatible with thermal models. We explore several hadron ratios (K/pi, p/pi, Lambda/pi, Xi/pi) within a hydrodynamic model with hadronic after burner, namely UrQMD 3.3, and show that the deviations can be understood as a final state effect. The measured values of the hadron ratios do then allow to gauge the transition energy density from hydrodynamics to the Boltzmann description. We find that the data can be explained with transition energy densities of 840 +- 150 MeV/fm^3. |
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| 1 : | Frankfurt Institute for Advanced Studies ( FIAS ) |
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| 2 : | SUBATECH - Laboratoire SUBATECH Nantes |
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| Thème(s) | : | Physique/Physique des Hautes Energies - Phénoménologie Physique/Physique Nucléaire Théorique |
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| Lien vers le texte intégral : |
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| http://fr.arXiv.org/abs/1203.5302 |
| in2p3-00682472, version 1 | |
| http://hal.in2p3.fr/in2p3-00682472 | |
| oai:hal.in2p3.fr:in2p3-00682472 | |
| Contributeur : Dominique Girod | |
| Soumis le : Lundi 26 Mars 2012, 10:53:06 | |
| Dernière modification le : Mardi 5 Mars 2013, 13:51:38 | |
