[Brahms-l] Fw: New PHENIX paper on PID-ed hadrons from d+Au and p+p collisions

Sent: Wednesday, March 01, 2006 7:02 AM
Subject: New PHENIX paper on PID-ed hadrons from d+Au and p+p collisions


> Dear Wit, Tim, Flemming and Sam:
> 
> In one week's time, the PHENIX collaboration will submit to Physical Review
> C a paper on the yields of identified hadrons in d+Au and p+p collisions.
> The title and abstract are enclosed below.
> 
> Best regards,
> 
> Bill
> 
> Title: Nuclear Effects on Hadron Production at $\sqrt{s_{NN}}$=200 GeV
> 
> Abstract:
> 
> PHENIX has measured the centrality dependence of mid-rapidity pion, kaon and
> proton transverse momentum distributions in d+Au and p+p collisions at
> $\sqrt{s_{NN}}$ =  200 GeV. The p+p data provide a reference for nuclear
> effects in d+Au and previously measured Au+Au collisions. Hadron production
> is enhanced in d+Au, relative to independent nucleon-nucleon scattering, as
> was observed in lower energy collisions. The nuclear modification factor for
> (anti) protons is larger than that for pions. The difference increases with
> centrality, but is not sufficient to account for the  abundance of baryon
> production observed in central Au+Au collisions at RHIC. The centrality
> dependence in d+Au shows that the nuclear modification factor increases
> gradually with the number of collisions suffered by each participant
> nucleon. We also present comparisons with lower energy data as well as with
> parton recombination and other theoretical models of nuclear effects on
> particle production.
>
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