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    Kaon Production from Hot and Dense Matter Formed in Heavy-Ion Collisions

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    PhysRevC.43.1881.pdf (508.9Kb)
    Date
    1991
    Author
    Brown, G. E.
    Ko, Che Ming
    Wu, Z. G.
    Xia, L. H.
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    Abstract
    In heavy-ion collisions, kaons can be produced from baryon-baryon, meson-baryon, and meson-meson interactions. Simple meson-exchange models are introduced to study kaon production from these processes in the free space. These models are then extended to determine kaon production in hot, dense nuclear matter by taking into account the decreasing hadron masses as a result of the restoration of chiral symmetry and the condensation of kaons. We find that the cross sections for kaon production from all three processes are enhanced. In particular, the effect of decreasing hadron masses on kaon production from the meson-meson annihilation is most significant. In the hydrochemical model for heavy-ion collisions, we demonstrate that the observed enhancement of kaon yield in high-energy heavy-ion collisions can be explained if the medium effect is included.
    URI
    http://dx.doi.org/10.1103/PhysRevC.43.1881
    https://hdl.handle.net/1969.1/126816
    Description
    Journals published by the American Physical Society can be found at http://publish.aps.org/
    Subject
    NUCLEUS-NUCLEUS COLLISIONS
    QUARK-GLUON PLASMA
    K+ PRODUCTION
    SIGMA-MESON
    ENERGY
    PION
    EQUATION
    DILEPTON
    MODEL
    TEMPERATURE
    Physics
    Department
    Physics and Astronomy
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    Citation
    G. E. Brown, Che Ming Ko, Z. G. Wu and L. H. Xia. Phys.Rev.C 43 1881-1892 1991. "Copyright (1991) by the American Physical Society."

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