[Brahms-l] Fw: New PHENIX paper on v_2 for phi and (d^bar)d in Au+Au at 200 GeV

FYI


Sent: Wednesday, March 07, 2007 11:31 AM
Subject: New PHENIX paper on v_2 for phi and (d^bar)d 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 Letters on v_2 for phi mesons and (anti)deutrons
> in 200 GeV Au+Au collisions.  Please find the title and abstract below.
> 
> Best regards,
> 
> Barbara
> 
> ----------------------------------------------------------------------------
> 
> TITLE:  Elliptic flow for \phi mesons and (anti)deuterons
>        in Au+Au collisions at sqrt(s_NN) = 200 GeV
> 
> ABSTRACT:
> 
> Differential elliptic flow (v_2) for phi mesons and (anti)deuterons
> (d^bar)d is measured for Au+Au collisions at sqrt(s_NN) = 200 GeV.
> The v_2 for phi mesons follows the trend of lighter pi^+/- and K^+/-
> mesons, suggesting that ordinary hadrons interacting with standard
> hadronic cross sections are not the primary driver for elliptic flow
> development. The v_2 values for (d^bar)d suggest that elliptic flow
> is additive for composite particles.  This further validation of the
> universal scaling of v2 per constituent quark for baryons and
> mesons suggests that partonic collectivity dominates the
> transverse expansion dynamics.
>
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