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Comparing particle emission scenarios in hydrodynamics: Continuous emission vs. freeze-out

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Acta Physica Hungarica New Series Heavy Ion Physics

Abstract

The usual particle emission scenario used in hydrodynamics presupposes that particles instantaneously stop interacting (freeze-out) once they reach some three dimensional surface. Another formalism has been developed recently where particle emission occurs continuously during the whole expansion of thermalized matter. Here we compare both mechanisms in a simplified hydrodynamical framework and show that they lead to a drastically different interpretation of data.

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Authors and Affiliations

  1. Instituto de Física-Unicamp, C.P. 1170, 13083-970, Campinas, SP, Brazil

    F. Grassi

  2. Instituto de Física-USP, C.P. 66318, 05389-970, São Paulo, SP, Brazil

    F. Grassi & Y. Hama

  3. Instituto de Física-UFRJ, C.P. 68528, 21945-970, Rio de Janeiro, RJ, Brazil

    T. Kodama

  4. Instituto de Física Teórica-UNESP, rua Pamplona 145, 01405-900, São Paulo, SP, Brazil

    O. Socolowski

Authors
  1. F. Grassi
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  2. Y. Hama
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  3. T. Kodama
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  4. O. Socolowski
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Grassi, F., Hama, Y., Kodama, T. et al. Comparing particle emission scenarios in hydrodynamics: Continuous emission vs. freeze-out. APH N.S., Heavy Ion Physics 5, 417–433 (1997). https://doi.org/10.1007/BF03156117

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  • DOI: https://doi.org/10.1007/BF03156117

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