[Brahms-l] Fwd: STAR new paper on the System size dependence of associated yields in hadron-triggered jets in HI collisions

FYI

Begin forwarded message:

> From: Nu Xu <NXu_at_lbl.gov>
> Date: March 28, 2009 1:50:00 AM EDT
> To: Steve Vigdor <vigdor_at_indiana.edu>, wit Busza <busza_at_MIT.EDU>,  
> Flemming Videbaek <videbaek_at_bnl.gov>, Barbara Jacak <jacak_at_skipper.physics.sunysb.edu 
> >
> Cc: Nu Xu <NXu_at_lbl.gov>
> Subject: STAR new paper on the System size dependence of associated  
> yields in hadron-triggered jets in HI collisions
>
> Dear Barbara, Wit, Flemming and Steve,
>
> I am pleased to announce that the STAR collaboration will submit to  
> Physics Letters B, in one week's time,  a new paper
> on the system size dependence of associated yields in hadron- 
> triggered jets in HI collisions at RHIC. The title and abstract are
> included below.
>
> Best regards,
>
> Nu Xu
>
>
> Title: "System size dependence of associated yields in hadron- 
> triggered jets"
>
> Abstract: "We present results on the system size dependence of high  
> transverse momentum di-hadron correlations at $\sqrt{s_{NN}}$ = 200  
> GeV as measured by STAR at RHIC. Measurements in d+Au, Cu+Cu and Au 
> +Au collisions reveal similar jet-like correlation yields at small  
> angular separation (\Delta \phi ~ 0, \Delta \eta ~ 0) for all  
> systems and centralities. Previous measurements have shown that the  
> away-side yield is suppressed in heavy-ion collisions. We present  
> measurements of the away-side suppression as a function of  
> transverse momentum and centrality in Cu+Cu and Au+Au collisions.  
> The suppression is found to be similar in Cu+Cu and Au+Au collisions  
> at a similar number of participants. The results are compared to  
> theoretical calculations based on the parton quenching model and the  
> modified fragmentation model. The observed differences between data  
> and theory indicate that the correlated yields presented here will  
> provide important constraints on medium density profile and energy  
> loss model parameters."

Flemming videbaek
videbaek @ bnl.gov
Brookhaven National Lab
631-344-4106
cell: 631-681-1596



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