[Brahms-l] Fw: New PHENIX manuscript on Scaling of elliptic flow in 200 GeV Au+Au and Cu+Cu collisions

FYI
greetings from SUU, Utah.

Flemming

----------------------------------------------------------------
Flemming Videbaek
Physics Department
Brookhaven National Laboratory


----
Subject: New PHENIX manuscript on Scaling of elliptic flow in 200 GeV Au+Au
and Cu+Cu collisions


> Dear Wit, Tim, Flemming and Peter:
>
> I am pleased to announce that PHENIX will submit to Physical Review
Letters
> in one week's time a paper on the scaling properties of elliptic flow in
200
> GeV Au+Au and Cu+Cu collisions. The title and abstract appear below.
>
> Best regards,
>
> Bill
>
> --------------------------------------------------------------------------
--
> ----------------------------
>
> TITLE:
>
> Scaling properties of azimuthal anisotropy in Au+Au and Cu+Cu collisions
> at sqrt(s_NN) = 200 GeV.
>
> ABSTRACT:
>
> Detailed differential measurements of the elliptic flow for particles
> produced in Au+Au and Cu+Cu collisions at sqrt(s_NN) = 200 GeV are
> presented.  Predictions from perfect fluid hydrodynamics for the scaling
> of the elliptic flow coefficient v_2 with eccentricity, system size and
> transverse energy are tested and validated.  For transverse kinetic
> energies KE_T == m_T-m up to ~1 GeV, scaling compatible with
> the hydrodynamic expansion of a thermalized fluid is observed for all
> produced particles. For larger values of KE_T, the mesons and baryons
> scale separately.  A universal scaling for the flow of both mesons and
> baryons is observed for the full transverse kinetic energy range of the
> data when quark number scaling is employed.  In both cases the scaling is
> more pronounced in terms of KE_T rather than transverse momentum.
>

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