Centrality Dependence of Charged Hadron Production in Deuteron+Gold and Nucleon+Gold Collisions at sqrt(s_NN) = 200 GeV

Journal Article · Tue Jan 01 00:00:00 EST 2008 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.77.014905· OSTI ID:931172

Adler, S. S. ^[1]; Awes, Terry C ^[2]; Cianciolo, Vince ^[2]; Efremenko, Yuri ^[3]; Read, Jr, Kenneth F ^[2]; Silvermyr, David O ^[2]; Sorensen, Soren P ^[4]; Stankus, Paul W ^[2]; Young, Glenn R ^[2]

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1. Brookhaven National Laboratory (BNL)
2. ORNL
3. University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL)
4. University of Tennessee, Knoxville (UTK)

We present transverse momentum (p{sub T}) spectra of charged hadrons measured in deuteron-gold and nucleon-gold collisions at {radical}s = 200 GeV for four centrality classes. Nucleon-gold collisions were selected by tagging events in which a spectator nucleon was observed in one of two forward rapidity detectors. The spectra and yields were investigated as a function of the number of binary nucleon-nucleon collisions, {nu}, suffered by deuteron nucleons. A comparison of charged particle yields to those in p+p collisions show that the yield per nucleon-nucleon collision saturates with {nu} for high momentum particles. We also present the charged hadron to neutral pion ratios as a function of p{sub T}.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 931172
• Journal Information: Physical Review C, Vol. 77, Issue 1; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGED PARTICLES
DEUTERONS
HADRONS
NUCLEONS
PARTICLE RAPIDITY
PIONS
PRODUCTION
SPECTRA
TRANSVERSE MOMENTUM