[Brahms-l] Fw: New PHENIX Paper on Direct Photons in Au+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: "'Ozaki, Satoshi'" <ozaki@bnl.gov>; "'Aronson, Sam'" <aronsons@bnl.gov>
Cc: "Wit Busza" <busza@mit.edu>; "'Hallman, Timothy J'" <hallman@bnl.gov>;
"'Videbaek, Flemming'" <videbaek@bnl.gov>
Sent: Monday, February 28, 2005 9:37 PM
Subject: New PHENIX Paper on Direct Photons in Au+Au Collisions


> Dear Satoshi, Sam, Wit, Tim and Flemming:
>
> The PHENIX Collaboration intends to submit in one week's time a manuscript
> on direct photon production in Au+Au collisions to Physical Review
Letters.
> The title and abstract appear below. The basic conclusions are identical
to
> what was presented at QM04; the new result is the presentation of explicit
> spectra (already shown at the Winter Workshop and in India at ICPAQGP).
>
> Best regards,
>
> Bill
>
>
============================================================================
> ====================
>
> Title: Centrality Dependence of Direct Photon Production in
> $\sqrt{s_{_{NN}}}$~=~200~GeV Au+Au Collisions.
>
> Abstract:
>
> The first measurement of direct photons in Au+Au collisions at
> $\sqrt{s_{_{NN}}} = 200$\,GeV is presented. The direct photon
> signal is extracted as a function of the Au+Au collision centrality
> and compared to NLO pQCD calculations. The direct photon
> yield is shown to scale with the number of nucleon-nucleon collisions
> for all centralities.
>


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