2003/11/10 by B. B. Back, M. D. Baker, M. Ballintijn +58 · 6 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex
paper · pdf · doi:10.1103/physrevlett.93.082301
published as Phys.Rev.Lett.93:082301,2004 · 4 pages, 3 figures. Submitted to Physical Review Letters
arxiv created 2003/11/10 · openalex publication_date 2004/08/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
The measured pseudorapidity distribution of primary charged particles in minimum-bias d+Au collisions at √sNN=200 GeV is presented for the first time. This distribution falls off less rapidly in the gold direction as compared to the deuteron direction. The average value of the charged particle pseudorapidity density at midrapidity is \ensuremath⟨dNch/d\ensuremathη\ensuremath⟩_\ensuremath|\ensuremathη\ensuremath|\ensuremath≤0.6=9.4\ifmmode±\else\textpm\fi0.7(syst) and the integrated primary charged particle multiplicity in the measured region is 82\ifmmode±\else\textpm\fi6(syst). Estimates of the total charged particle production, based on extrapolations outside the measured pseudorapidity region, are also presented. The pseudorapidity distribution, normalized to the number of participants in d+Au collisions, is compared to those of Au+Au and p+p systems at the same energy. The d+Au distribution is also compared to the predictions of the parton saturation model, as well as microscopic models.