[Brahms-l] Fw: New PHENIX paper on electrons from heavy flavor in Au+Au collisions

From: Flemming Videbaek <videbaek_at_bnl.gov>
Date: Fri, 3 Nov 2006 16:55:48 -0500
FYI,

I happen to know that Phneix is in some mode where the want to submit a large (~10-14) paper before QM
so they do not break their rule of showing multiple prel. data sets.

/fv

From: "W.A. Zajc" <zajc_at_nevis.columbia.edu>
To: "Wit Busza" <busza_at_mit.edu>; "Tim Hallman" <Hallman_at_bnl.gov>; "'Flemming Videbaek'" <videbaek_at_bnl.gov>; "Peter Bond" 
<bond1_at_bnl.gov>
Sent: Friday, November 03, 2006 4:50 PM
Subject: New PHENIX paper on electrons from heavy flavor in Au+Au collisions


> Dear Wit, Tim, Flemming and Peter;
>
> In one week's time the PHENIX Collaboration will submit a paper to Physical
> Review Letters on energy loss and flow of heavy flavor in 200 GeV Au+Au
> collisions. Please find the title and abstract below.
>
> Best regards,
>
> Bill
>
>
> ----------------------------------------------------------------------------
> ------------------------
>
> TITLE: "Energy Loss and Flow of Heavy Quarks in Au+Au Collisions at
> \sqrt{s_{NN}} = 200 GeV"
>
> ABSTRACT:
>
> The PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) has
> measured electrons from heavy flavor (charm and bottom) decays for 0.3 < pT
> < 9 GeV/c at midrapidity (|y| < 0.35) in Au+Au collisions at \sqrt{s_{NN}} =
> 200 GeV. The nuclear modification factor RAA relative to p+p collisions
> shows a strong suppression in central Au+Au collisions, indicating
> substantial energy loss of heavy quarks in the medium produced at RHIC. A
> large azimuthal anisotropy, v2, with respect to the reaction plane is
> observed for 0.5 < pT < 5 GeV/c indicating non-zero heavy flavor elliptic
> flow. A simultaneous description of RAA(pT ) and v2(pT ) constrains the
> existing models of heavy-quark rescattering in strongly interacting matter
> and provides information on the transport properties of
> the produced medium. In particular, a viscosity to entropy density ratio
> close to the conjectured
> quantum lower bound, i.e. near a perfect fluid, is suggested.
> 

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Received on Fri Nov 03 2006 - 16:56:36 EST

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