[Brahms-l] Fw: New PHENIX paper on charged particle multiplicity fluctuations in Au+Au at 200 GeV

FYI
Sent: Friday, April 06, 2007 1:42 PM
Subject: New PHENIX paper on charged particle multiplicity fluctuations in Au+Au at 200 GeV


> Dear Tim, Wit, Flemming, and Peter;
> 
> In one week's time the PHENIX Collaboration will submit a paper to
> Physical Review C on density correlations via charged particle multiplicity
> fluctuations in Au+Au collisions.  Please find the title and abstract below.
> 
> Best regards,
> 
> Barbara
> 
> ----------------------------------------------------------------------------
> 
> TITLE:  Measurement of density correlations in pseudorapidity
> via charged particle multiplicity fluctuations in Au+Au
> collisions at \snn~$=$~200~GeV
> 
> ABSTRACT:
> Longitudinal density correlations of produced matter in Au+Au
> collisions at \snn~$=$~200~GeV have been measured from the inclusive
> charged particle distributions as a function of pseudorapidity
> window sizes. The extracted $\alpha \xi$ parameter, related to the
> susceptibility of the density fluctuations in the long wavelength
> limit, exhibits a non-monotonic behavior as a function of the number
> of participant nucleons, \npart. A local maximum is seen at
> \npart~$\sim$~90, with corresponding energy density based on the
> Bjorken picture of $\epsilon_{Bj}\tau$~$\sim$~2.4~GeV/fm$^{2}\cdot c$
> with a transverse area size of 60~fm$^{2}$. This behavior may suggest
> a critical phase boundary based on the Ginzburg-Landau framework.
>
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