[Brahms-l] Fw: Release of STAR Paper on Multiplicity and Pseudorapidity Distributions of Photons

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

e-mail: videbaek@bnl.gov
phone: 631-344-4106
----- Original Message ----- 
From: "Timothy Hallman" <hallman@bnl.gov>
To: "Ozaki, Satoshi" <ozaki@bnl.gov>; "William A Zajc" <zajc@bnl.gov>; "'Wit
Busza'" <busza@MIT.EDU>; "Videbaek, Flemming" <videbaek@bnl.gov>;
<Aronsons@bnl.gov>
Cc: <hallman@bnl.gov>
Sent: Saturday, January 29, 2005 10:15 PM
Subject: Release of STAR Paper on Multiplicity and Pseudorapidity
Distributions of Photons


> Dear Satoshi (Sam), Bill, Flemming, and Wit,
>
> I am pleased to announce STAR's intention to submit a new
> paper on:
>
> "Multiplicity and pseudorapidity distributions of photons
> in Au+Au collisions at sqrt(s_NN)=62.4 GeV"
>
> to Physical Review Letters one week from today. The title and
> abstract for the paper are enclosed.
>
>                       Sincerely,
>
>                            Tim
>
>
>
>
>
> Title:  "Multiplicity and pseudorapidity distributions of photons
> in Au+Au collisions at sqrt(s_NN)=62.4 GeV"
>
> Abstract: We present the first measurement of multiplicity and
> pseudorapidity distributions of photons in the pseudorapidity
> region 2.3 .le. eta .le. 3.7 for different centralities in Au+Au
> collisions at roots_NN = 62.4 GeV. We find that the photon yield
> in this pseudorapidity range scales with the number of participating
> nucleons at the collision centralities studied. The pseudorapidity
> distribution of photons, dominated by neutral pion decays, has been
> compared to those of identified charged pions, photons, and inclusive
> charged particles from heavy ion and nucleon-nucleon collisions at various
> energies. The photon production in the measured pseudorapidity region
> has been shown to be consistent with energy and centrality independent
> limiting fragmentation scenario.
>
>


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