[Brahms-l] Fw: New PHENIX paper on J/Psi production in p+p and d+Au collisions

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

e-mail: videbaek@bnl.gov
phone: 631-344-4106
----- Original Message ----- 
From: "W.A. Zajc" <zajc@nevis.columbia.edu>
To: "'Wit Busza'" <busza@MIT.EDU>; "'Timothy Hallman'" <hallman@bnl.gov>;
"'Videbaek, Flemming'" <videbaek@bnl.gov>; "'Samuel H. Aronson'"
<aronsons@bnl.gov>
Sent: Wednesday, July 20, 2005 7:36 AM
Subject: New PHENIX paper on J/Psi production in p+p and d+Au collisions


> Dear Wit, Tim, Flemming and Sam:
>
> In one week's time the PHENIX collaboration will submit a manuscript to
> Physical Review Letters on J/Psi production in p+p and d+Au collisions.
The
> title and abstract are enclosed below.
>
> Best regards,
>
> Bill
>
>
> Title: $J/\psi$ Production and Nuclear Effects for $d+Au$ and $p+p$
> Collisions at $\sqrt{s_{NN}}$ = 200~GeV
>
> $J/\psi$ production in $d+Au$ and $p+p$ collisions at $\sqrt{s_{NN}} =
200$
> GeV
> has been measured by the PHENIX experiment at rapidities $-2.2 < y <
+2.4$.
> The cross sections and nuclear dependence of $J/\psi$ production versus
> rapidity,
> transverse momentum, and centrality are obtained and compared to lower
> energy $p+A$ results and to theoretical models. The observed nuclear
> dependence in $d+Au$ collisions is found to be modest, suggesting that the
> absorption in the final state is weak and the shadowing of the gluon
> distributions is small and consistent with DGLAP-based parameterizations
> that fit deep-inelastic scattering and Drell-Yan data at lower energies.
>
>


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