Charged-Particle Pseudorapidity Density Distributions from Au+Au Collisions at

Journal Article · Mon Sep 03 04:00:00 EDT 2001 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.87.102303· OSTI ID:40277515

Back, B B; Baker, M D; Barton, D S; Betts, R R; Bindel, R; Budzanowski, A; Busza, W; Carroll, A; Decowski, M P; Garcia, E ^[1]

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1. and others

The charged-particle pseudorapidity density dN{sub ch}/d{eta} has been measured for Au+Au collisions at s{sub NN}=130 GeV at RHIC, using the PHOBOS apparatus. The total number of charged particles produced for the 3% most-central Au+Au collisions for |{eta}|{<=}5.4 is found to be 4200{+-}470 . The evolution of dN{sub ch}/d{eta} with centrality is discussed, and compared to model calculations and to data from proton-induced collisions. The data show an enhancement in charged-particle production at midrapidity, while in the fragmentation regions, the results are consistent with expectations from pp and pA scattering.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• Sponsoring Organization: (US)
• DOE Contract Number: AC02-98CH10886; FC02-94ER40818; FG02-93ER40802; FG02-94ER40865; FG02-99ER41099; W-31109-ENG-38
• OSTI ID: 40277515
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 87; ISSN 0031-9007
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGED PARTICLES
COLLISIONS
FRAGMENTATION
PRODUCTION
SCATTERING