[Brahms-l] Fwd: STAR new paper on higher moments of net-protons

FYI


> From: Nu Xu <NXu_at_lbl.gov>
> Date: April 17, 2010 11:49:07 PM EDT
> To: Barbara Jacak <jacak_at_skipper.physics.sunysb.edu>, Flemming  
> Videbaek <videbaek_at_bnl.gov>, Wit Busza <busza_at_MIT.EDU>, Steven  
> Vigdor <vigdor_at_bnl.gov>
> Cc: Nu Xu <NXu_at_lbl.gov>
> Subject: STAR new paper on higher moments of net-protons
>
> Dear Barbara, Wit, Flemming and Steve,
>
> I am pleased to announce that the STAR collaboration will submit to  
> Physical Review Letters,  in one week's time,  a new paper on higher  
> moments of net-protons in Au+Au collisions at RHIC. The title and  
> abstract are included below.
>
> Best regards,
>
> Nu Xu
>
> -----------------------------------------------------------------------
> Nu Xu
>
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> -----------------------------------------------------------------------
>
> Title: "Higher Moments of Net-proton Distributions at RHIC"
>
> Abstract: "We report the first measurements of the kurtosis (K),  
> skewness (S) and variance (sigma^2) of net-proton number (Np −N¯p)  
> distributions at midrapidity for Au+Au collisions at psNN = 19.6,  
> 62.4, and 200 GeV corresponding to baryon chemical potentials (μB)  
> between 200 - 20 MeV. Our measurements of the products K*sigma^2 and  
> S*sigma, which can be related to theoretical calculations sensitive  
> to baryon number susceptibilities and long range correlations, are  
> constant as functions of collision centrality. We compare these  
> products with results from lattice QCD and various models without a  
> critical point and study the psNN dependence of K*sigma^2. From the  
> measurements at the three beam energies, we find no evidence for a  
> critical point in the QCD phase diagram for μB below 200 MeV."



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