[Brahms-l] Fw: New PHENIX Paper on flow systematics as a function of energy

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

e-mail: videbaek@bnl.gov
phone: 631-344-4106
----- Original Message ----- 
From: "W.A. Zajc" <zajc@nevis.columbia.edu>
To: "'Kirk, Thomas B'" <tkirk@exchange.bnl.gov>; "'Busza, Wit'"
<busza@mit.edu>; "'Hallman, Timothy'" <hallman@bnl.gov>; "'Videbaek,
Flemming'" <videbaek@bnl.gov>
Sent: Friday, November 12, 2004 2:16 PM
Subject: New PHENIX Paper on flow systematics as a function of energy


> Dear Tom, Wit, Tim and Flemming:
>
> The PHENIX Collaboration intends to submit in approximately one week's
time
> a manuscript to Physical Review Letters on our analysis of v_2 systematics
> in 62 and 200 GeV Au+Au collisions. The title and abstract are included
> below.
>
> Best regards,
>
> Bill
>
>
============================================================================
> ======================
> Title:  Saturation of azimuthal anisotropy in Au + Au collisions
>         at sqrt(s_NN) = 62 - 200 GeV.
>
> Abstract:  New measurements are presented for charged hadron azimuthal
> correlations at mid-rapidity in Au+Au collisions at sqrt(s_NN) = 62.4 and
> 200 GeV.  They are compared to earlier measurements obtained at sqrt(s_NN)
=
> 130 GeV and in Pb+Pb collisions at sqrt(s_NN) = 17.2 GeV.
> Sizeable anisotropies are observed with centrality and transverse momentum
> (p_T) dependence characteristic of elliptic flow (v_2). For a broad range
of
> centralities, the observed magnitudes and trends of the differential
> anisotropy, v_2(p_T), change very little over the collision energy range
> sqrt(s_NN) = 62-200 GeV, indicating saturation of the excitation function
> for v_2 at these energies.  Such a saturation may be indicative of the
> dominance of a very soft equation of state for sqrt(s_NN) = 62-200 GeV.
>


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