[Brahms-l] Fw: New STAR Paper

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

Subject: New STAR Paper


> Dear Sam, Bill, Flemming, and Wit,
> 
> I am pleased to announce STAR's intention to submit a new
> paper on "Transverse-momentum pt correlations on (eta,phi)
> from mean-pt fluctuations in Au-Au collisions at roots_NN =
> 200 GeV" to Physics Letters B one week from today. The title
> and abstract for the paper are enclosed.
> 
>                     Sincerely,
> 
>                      Tim
> 
> 
> 
> 
> Title:  "Transverse-momentum pt correlations on (eta,phi)
> from mean-pt fluctuations in Au-Au collisions at roots_NN =
> 200 GeV"
> 
> Abstract:  We present first measurements of the psuedorapidity
> and azimuth (eta, phi) bin-size dependence of event-wise mean
> transverse momentum <pt> fluctuations for AuAu collisions at
> roots_NN = 200 GeV. We invert that dependence to obtain pt
> autocorrelations on differences (eta_delta, phi_delta) interpreted
> to represent velocity/temperature distributions on (eta,phi).
> The general form of the autocorrelations suggests that the basic
> correlation mechanism is parton fragmentation. The autocorrelations
> vary strongly with collision centrality, which suggests that
> fragmentation is strongly modified by a dissipative medium
> in the more central Au-Au collisions relative to peripheral or
> pp collisions.
> 
> 

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