Charged particle densities from Au+Au collisions at s(NN)**(1/2) = 130-GeV
Aug, 2001Citations per year
Abstract:
We present charged particle densities as a function of pseudorapidity and collision centrality for the 197Au+197Au reaction at sqrt{s_{NN}}=130 GeV. An integral charged particle multiplicity of 3860+/-300 is found for the 5% most central events within the pseudorapidity range -4.7 <= eta <= 4.7. At mid-rapidity an enhancement in the particle yields per participant nucleon pair is observed for central events. Near to the beam rapidity, a scaling of the particle yields consistent with the ``limiting fragmentation'' picture is observed. Our results are compared to other recent experimental and theoretical discussions of charged particle densities in ultra-relativistic heavy-ion collisions.Note:
- 14 pages, 4 figures; to be published in Phys. Lett. B
- 25.75.Dw
- nucleus nucleus: colliding beams
- scattering: heavy ion
- gold
- hadron: multiple production
- charged particle: rapidity spectrum
- charged particle: multiplicity
- impact parameter: dependence
- model: nuclear reaction
- scaling
References(17)
Figures(5)