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    Antiflow of kaons in relativistic heavy ion collisions

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    PhysRevC.62.061903.pdf (76.20Kb)
    Date
    2000
    Author
    Pal, S.
    Ko, Che Ming
    Lin, ZW
    Zhang, B.
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    Abstract
    We compare relativistic transport model calculations to recent data on the sideward flow of neutral strange K-s(0) mesons for Au+Au collisions at 6A GeV. A soft nuclear equation of state is found to describe very well the positive proton flow data measured in the same experiment. In the absence of the kaon potential, the K-0 flow pattern is similar to that of protons. The kaon flow becomes negative if a repulsive kaon potential determined from the impulse approximation is introduced. However, this potential underestimates the data which exhibit larger antiflow. An excellent agreement with the data is obtained when a relativistic scalar-vector kaon potential, that has stronger density dependence, is used. We further find that the transverse momentum dependence of directed and elliptic flow is quite sensitive to the kaon potential in dense matter.
    URI
    http://dx.doi.org/10.1103/PhysRevC.62.061903
    https://hdl.handle.net/1969.1/126902
    Description
    Journals published by the American Physical Society can be found at http://publish.aps.org/
    Subject
    NUCLEUS-NUCLEUS COLLISIONS
    OUT-OF-PLANE
    AU+AU COLLISIONS
    ELLIPTIC
    FLOW
    EXCITATION-FUNCTIONS
    ANISOTROPIC FLOW
    TRANSVERSE FLOW
    DENSE
    MATTER
    K+
    CONDENSATION
    Physics
    Department
    Physics and Astronomy
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    Citation
    S. Pal, Che Ming Ko, Z. W. Lin and B. Zhang. Phys.Rev.C 62 061903 2000. "Copyright (2000) by the American Physical Society."

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