Effects of a phase transition on HBT correlations in an integrated Boltzmann+Hydrodynamics approach

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dc.creatorLi, Qingfeng
dc.creatorSteinheimer, Jan
dc.creatorPetersen, Hannah
dc.creatorBleicher, Marcus
dc.creatorStoecker, Horst
dc.date2008-12-01
dc.date2009-03-20
dc.date.accessioned2026-07-07T12:58:52Z
dc.date.available2026-07-07T12:58:52Z
dc.descriptionA systematic study of HBT radii of pions, produced in heavy ion collisions in the intermediate energy regime (SPS), from an integrated (3+1)d Boltzmann+hydrodynamics approach is presented. The calculations in this hybrid approach, incorporating an hydrodynamic stage into the Ultra-relativistic Quantum Molecular Dynamics transport model, allow for a comparison of different equations of state retaining the same initial conditions and final freeze-out. The results are also compared to the pure cascade transport model calculations in the context of the available data. Furthermore, the effect of different treatments of the hydrodynamic freeze-out procedure on the HBT radii are investigated. It is found that the HBT radii are essentially insensitive to the details of the freeze-out prescription as long as the final hadronic interactions in the cascade are taken into account. The HBT radii $R_L$ and $R_O$ and the $R_O/R_S$ ratio are sensitive to the EoS that is employed during the hydrodynamic evolution. We conclude that the increased lifetime in case of a phase transition to a QGP (via a Bag Model equation of state) is not supported by the available data.
dc.description7 pages, 5 figures. Accepted by Phys. Lett. B
dc.identifierhttps://arxiv.org/abs/0812.0375
dc.identifierhttp://arxiv.org/abs/0812.0375
dc.identifierPhys.Lett.B674:111-116,2009
dc.identifierdoi:10.1016/j.physletb.2009.03.012
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225388
dc.subjectNuclear Theory
dc.titleEffects of a phase transition on HBT correlations in an integrated Boltzmann+Hydrodynamics approach
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