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    Partonic effects on higher-order anisotropic flows in relativistic heavy-ion collisions RID A-2398-2009

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    PhysRevC.69.031901.pdf (89.08Kb)
    Date
    2004
    Author
    Chen, LW
    Ko, Che Ming
    Lin, ZW.
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    Abstract
    Higher-order anisotropic flows v(4) and v(6) of charged hadrons in heavy-ion collisions at the Relativistic Heavy Ion Collider are studied in a multiphase transport model that has previously been used successfully for describing the elliptic flow v(2) of identified hadrons in these collisions. We find that the same parton scattering cross section of about 10 mb used in explaining the measured v(2) of charged hadrons can also reproduce the recent data on their v(4) and v(6) from Au+Au collisions at roots=200A GeV. It is further found that v(4) is a more sensitive probe of the initial partonic dynamics in these collisions than v(2). Moreover, higher-order parton anisotropic flows are non-negligible and satisfy the scaling relation v(n,q)(p(T))similar tov(2,q)(n/2)(p(T)), which leads naturally to the observed similar scaling relation among hadron anisotropic flows when the coalescence model is used to describe hadron production from the partonic matter.
    URI
    http://dx.doi.org/10.1103/PhysRevC.69.031901
    https://hdl.handle.net/1969.1/126951
    Description
    Journals published by the American Physical Society can be found at http://publish.aps.org/
    Subject
    SUPERDENSE HADRONIC MATTER
    ELLIPTIC FLOW
    PHASE-TRANSITION
    NUCLEAR
    COLLISIONS
    COLLECTIVE FLOW
    SIGNATURE
    ENERGY
    MODEL
    QCD
    CASCADE
    Physics
    Department
    Physics and Astronomy
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    Citation
    LW Chen, Che Ming Ko and Z. W. Lin. Phys.Rev.C 69 031901 2004. "Copyright (2004) by the American Physical Society."

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