Strangeness excitation functions and transition from baryonic to mesonic freeze-out

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dc.contributor.authorCleymans, Jean
dc.contributor.authorOeschler, Helmut
dc.contributor.authorRedlich, Krzysztof
dc.contributor.authorWheaton, Spencer
dc.date.accessioned2018-04-03T09:31:59Z
dc.date.available2018-04-03T09:31:59Z
dc.date.issued2009
dc.date.updated2016-01-20T09:01:13Z
dc.description.abstractThe sharp peak in the K+/π+ ratio in relativistic heavy-ion collisions is discussed in the framework of the Statistical Model. In this model a rapid change is expected as the hadronic gas undergoes a transition from a baryon-dominated to a meson-dominated gas. The maximum in the Λ/π ratio is well reproduced by the Statistical Model, but the change in the K+/π+ ratio is somewhat less pronounced than the one observed by the NA49 collaboration. The calculated smooth increase of the K−/π− ratio and the shape of the Ξ−/π+ and Ω−/π+ ratios exhibiting maxima at different incident energies is consistent with the presently available experimental data. We conclude that the measured particle ratios with 20 − 30% deviations agree with a hadronic freeze-out scenario. These deviations seem to occur just in the transition from baryon-dominated to meson-dominated freeze-out.
dc.identifier.apacitationCleymans, J., Oeschler, H., Redlich, K., & Wheaton, S. (2009). Strangeness excitation functions and transition from baryonic to mesonic freeze-out. <i>Acta Physica Polonica B</i>, http://hdl.handle.net/11427/27738en_ZA
dc.identifier.chicagocitationCleymans, Jean, Helmut Oeschler, Krzysztof Redlich, and Spencer Wheaton "Strangeness excitation functions and transition from baryonic to mesonic freeze-out." <i>Acta Physica Polonica B</i> (2009) http://hdl.handle.net/11427/27738en_ZA
dc.identifier.citationCleymans, J., Oeschler, H., Redlich, K., & Wheaton, S. (2009). Strangeness Excitation Functions and Transition from Baryonic to Mesonic Freeze-Out. arXiv preprint arXiv:0911.0526.
dc.identifier.ris TY - Journal Article AU - Cleymans, Jean AU - Oeschler, Helmut AU - Redlich, Krzysztof AU - Wheaton, Spencer AB - The sharp peak in the K+/π+ ratio in relativistic heavy-ion collisions is discussed in the framework of the Statistical Model. In this model a rapid change is expected as the hadronic gas undergoes a transition from a baryon-dominated to a meson-dominated gas. The maximum in the Λ/π ratio is well reproduced by the Statistical Model, but the change in the K+/π+ ratio is somewhat less pronounced than the one observed by the NA49 collaboration. The calculated smooth increase of the K−/π− ratio and the shape of the Ξ−/π+ and Ω−/π+ ratios exhibiting maxima at different incident energies is consistent with the presently available experimental data. We conclude that the measured particle ratios with 20 − 30% deviations agree with a hadronic freeze-out scenario. These deviations seem to occur just in the transition from baryon-dominated to meson-dominated freeze-out. DA - 2009 DB - OpenUCT DP - University of Cape Town J1 - Acta Physica Polonica B LK - https://open.uct.ac.za PB - University of Cape Town PY - 2009 T1 - Strangeness excitation functions and transition from baryonic to mesonic freeze-out TI - Strangeness excitation functions and transition from baryonic to mesonic freeze-out UR - http://hdl.handle.net/11427/27738 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/27738
dc.identifier.vancouvercitationCleymans J, Oeschler H, Redlich K, Wheaton S. Strangeness excitation functions and transition from baryonic to mesonic freeze-out. Acta Physica Polonica B. 2009; http://hdl.handle.net/11427/27738.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Physicsen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.sourceActa Physica Polonica B
dc.source.urihttp://arxiv.org/abs/0911.0526
dc.titleStrangeness excitation functions and transition from baryonic to mesonic freeze-out
dc.typeJournal Article
uct.type.filetypeText
uct.type.filetypeImage
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