[Brahms-l] Fw: New PHENIX paper on J/Psi production in 200 GeV Au+Au collisions

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


> Dear Wit, Tim, Flemming and Peter:
>
> In one week's time the PHENIX Collaboration will submit to Physical Review Letters a new paper on J/Psi production in Au+Au 
> Collisions. The title and abstract are included below.
>
> Best regards,
>
> Bill
>
> ----------------------------------------------------------------------------------------------------
>
> TITLE: J/Psi Production in Au+Au collisions at \sqrt{s_{NN}} = 200 GeV
>
>
> ABSTRACT:
>
> The PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) has measured J/Psi  production for rapidities −2.2 < y < 2.2 
> in Au+Au collisions at \sqrt{s_{NN}} = 200 GeV. The J/Psi  invariant yield and nuclear modification factor R_AA as a function of 
> centrality, transverse momentum and rapidity are reported. A suppression of J/Psi's  relative to binary collision scaling of 
> proton-proton reaction yields is observed. Models which describe the lower energy J/Psi  data at the Super Proton Synchrotron 
> (SPS) [1, 2] invoking only J/Psi  destruction based on the local medium density would predict a significantly larger suppression 
> at RHIC and more suppression at mid rapidity than at
> forward rapidity. Both trends are contradicted by our data.
>
>
> 

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