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    Sign of Kurtosis near the QCD Critical Point

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    PhysRevLett.107.052301.pdf (429.9Kb)
    Date
    2011-07
    Author
    Stephanov, M. A.
    Publisher
    American Physical Society
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    Abstract
    We point out that the quartic cumulant (and kurtosis) of the order parameter fluctuations is universally negative when the critical point is approached on the crossover side of the phase separation line. As a consequence, the kurtosis of a fluctuating observable, such as, e.g., proton multiplicity, may become smaller than the value given by independent Poisson statistics. We discuss implications for the beam energy scan program at RHIC at BNL.
    Type
    Article
    Date available in INDIGO
    2012-03-06T02:11:09Z
    URI
    http://hdl.handle.net/10027/8164
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    • Publications - Physics

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