[Brahms-l] Fw: announcement of new paper from Phobos

FYI
--------------------------------------------
Flemming Videbaek
Physics Department 
Bldg 510-D
Brookhaven National Laboratory
Upton, NY11973

phone: 631-344-4106
cell:       631-681-1596
fax:        631-344-1334
e-mail: videbaek @ bnl gov

Subject: announcement of new paper from Phobos


> Dear Peter, Barbara, Flemming, and Tim:
> 
> It is my pleasure to announce that in one week's time Phobos intends  
> to submit the
> following paper to PRL.
> 
> All the best,
> Wit
> 
> 
> 
> Title: Elliptic flow fluctuations in Au+Au collisions at sqrt(s_NN) 
> =200GeV
> 
> Abstract:
>  This paper presents the first measurement of event-by-event
>   fluctuations of charged particle elliptic flow in Au+Au collisions
>   at sqrt(s_NN)=200GeV as a function of collision
>   centrality.  The relative non-statistical fluctuations of the
>   elliptic flow coefficient, v_2, are found to be approximately
>   40%. The magnitude of the observed relative fluctuations in v_2
>   agrees with predictions based on spatial fluctuations of the
>   participating nucleons in the initial nuclear overlap region.  These
>   results are consistent with a scenario where v_2 is directly
>   proportional to the eccentricity of the initial matter distribution
>   on an event-by-event basis. The subsequent evolution of the system
>   does not change this in any measurable way, consistent with
>   hydrodynamic evolution with a very low viscosity.  The agreement of
>   the results with event-by-event eccentricity calculations indicates
>   that matter in the initial stage of the collision is produced with a
>   transverse granularity similar to that of the participant nucleons.
>
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