[Brahms-l] Fwd: PHOBOS summary paper on pseudorapidity distributions

FYI


Flemming Videbaek
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
Bldg 510D
Upton, NY 11973

phone: 631-344-4106
cell     :  631-681-1596





Begin forwarded message:

> From: Wit Busza <busza_at_mit.edu>
> Date: October 15, 2010 2:46:02 PM EDT
> To: Barbara Jacak <jacak_at_skipper.physics.sunysb.edu>, Flemming  
> Videbaek <videbaek_at_bnl.gov>, Steven Vigdor <vigdor_at_bnl.gov>, Nu Xu <NXu_at_lbl.gov 
> >
> Cc: PHOBOS Collaboration <phobos_at_mit.edu>
> Subject: PHOBOS summary paper on pseudorapidity distributions
>
>>
> Dear Barbara, Flemming, Nu and Steve,
>
> I am pleased to advise you that in a week's time The PHOBOS  
> Collaboration plans to submit to Phys.Rev. C.  a summary paper on
>
> "Phobos results on charged particle multiplicity and pseudorapidity  
> distributions in Au+Au, Cu+Cu, d+Au, and p+p collisions at ultra- 
> relativistic energies".
>
> The abstract is as follows:
>
> Pseudorapidity distributions of charged particles emitted in Au+Au,  
> Cu+Cu, d+Au, and p+p collisions over a wide energy range have been  
> measured using the PHOBOS detector at RHIC. The centrality  
> dependence of both the charged particle distributions and the  
> multiplicity at midrapidity were measured. Pseudorapidity  
> distributions of charged particles emitted with |\eta|<5.4, which  
> accounts for between 95% and 99% of the total charged-particle  
> emission associated with collision participants are presented for  
> different collision centralities. Both the midrapidity density,  
> dN_ch/d\eta, and the total charged-particle multiplicity N_ch are  
> found to factorize into a product of independent functions of  
> collision energy, sqrt(s_NN), and centrality given in terms of the  
> number of nucleons participating in the collision, N_part. The total  
> charged particle multiplicity, observed in these experiments and  
> those at lower energies, assumes a linear dependence of (ln s_NN)^2  
> over the full range of collision energy of sqrt(s_NN)=2.7-200 GeV.
>
> All the best,
> Wit
>
>
>
>
>
>
>
>
>
> Wit Busza
> Francis Friedman Professor of Physics
> 24-510
> Massachusetts Institute of Technology
> 77 Massachusetts Avenue
> Cambridge, MA 02139
> Phone 617 253 7586
> Fax 617 253 4360
> busza_at_mit.edu



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