Phys. Rev. Lett. 94, 032301 (2005) [5 pages]Centrality Dependence of Charged-Particle Pseudorapidity Distributions from d+Au Collisions at √sNN=200 GeVReceived 21 January 2004; published 26 January 2005 Charged-particle pseudorapidity densities are presented for the d+Au reaction at √sNN=200 GeV with -4.2≤η≤4.2. The results, from the BRAHMS experiment at BNL Relativistic Heavy-Ion Collider, are shown for minimum-bias events and 0%–30%, 30%–60%, and 60%–80% centrality classes. Models incorporating both soft physics and hard, perturbative QCD-based scattering physics agree well with the experimental results. The data do not support predictions based on strong-coupling, semiclassical QCD. In the deuteron-fragmentation region the central 200 GeV data show behavior similar to full-overlap d+Au results at √sNN=19.4 GeV. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.032301
DOI:
10.1103/PhysRevLett.94.032301
PACS:
25.75.Dw
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.