Centrality Dependence of {pi}⁰ and {eta} Production at Large Transverse Momentum in sqrt(s_NN) = 200 GeV d + Au Collisions

Journal Article · Sun Apr 01 00:00:00 EDT 2007 · Physical Review Letters

OSTI ID:931510

Awes, Terry C ^[1]; Batsouli, Sotiria ^[2]; Cianciolo, Vince ^[1]; Efremenko, Yuri ^[2]; Plasil, F ^[1]; Read, Jr, Kenneth F ^[1]; Silvermyr, David O ^[1]; Sorensen, Soren P ^[3]; Stankus, Paul W ^[1]; Young, Glenn R ^[1]; Zhang, Chun ^[2]

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

The dependence of transverse momentum spectra of neutral pions and {eta} mesons with p{sub T}<16 GeV/c and p{sub T}<12 GeV/c, respectively, on the centrality of the collision has been measured at midrapidity by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider (RHIC) in d+Au collisions at {radical}s{sub NN}=200 GeV. The measured yields are compared to those in p+p collisions at the same {radical}s{sub NN} scaled by the number of underlying nucleon-nucleon collisions in d+Au. At all centralities, the yield ratios show no suppression, in contrast to the strong suppression seen for central Au+Au collisions at RHIC. Only a weak pT and centrality dependence can be observed.

• 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: 931510
• Journal Information: Physical Review Letters, Vol. 98, Issue 17; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
74 ATOMIC AND MOLECULAR PHYSICS
BNL
HEAVY IONS
MESONS
PIONS
PRODUCTION
SPECTRA
TRANSVERSE MOMENTUM