[Brahms-l] Fwd: New PHENIX paper on eta meson suppression

FYI



> From: Barbara Jacak <jacak_at_skipper.physics.sunysb.edu>
> Date: May 19, 2010 5:24:52 PM EDT
> To: Nu Xu <NXu_at_lbl.gov>, Wit Busza <busza_at_mit.edu>, "Videbaek,  
> Flemming" <videbaek_at_bnl.gov>, "Vigdor, Steven" <vigdor_at_bnl.gov>
> Subject: New PHENIX paper on eta meson suppression
>
> Dear Nu, Wit, Flemming and Steve,
>
> I am happy to announce that in one week's time, the
> PHENIX Collaboration will submit a paper to Phys.Rev.
> Letters on the topic indicated in the subject line. Please
> find the title and abstract below.
>
> best regards,
> Barbara
>
> -----------------------------------------------------
> Title:
> Transverse momentum dependence of  meson suppression
> in Au+Au collisions at sqrt(s_NN) = 200 GeV
>
> Abstract:
> New measurements by the PHENIX experiment at RHIC for eta
> production at midrapidity as a function of transverse momentum (pT)
> and collision centrality in sqrt(s_NN) = 200 GeV Au+Au and p+p
> collisions are presented. They indicate nuclear modication factors
> (RAA) which are similar both in magnitude and trend to those found
> in earlier pi^0 measurements. Linear ts to RAA in the 5-20 GeV/c pT
> region show that the slope is consistent with zero within two standard
> deviations at all centralities although a slow rise cannot be  
> excluded.
> Having dierent statistical and systematic uncertainties the pi^0  
> and eta
> measurements are complementary at high pT; thus, along with the
> extended pT range of these data they can provide additional  
> constraints
> for theoretical modeling and the extraction of transport properties.



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