Scaling of p{sub T} distributions for p and p produced in Au+Au collisions at {radical}(s{sub NN})=200 GeV

Journal Article · Mon Oct 15 04:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.044910· OSTI ID:21067835

Zhang, W C; Zeng, Y; Nie, W X; Zhu, L L; Yang, C B ^[1]

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1. Institute of Particle Physics, Hua-Zhong Normal University, Wuhan 430079 (China)

With the experimental data from STAR and PHENIX on the centrality dependence of the p{sub T} spectra of protons and antiprotons produced at midrapidity in Au+Au collisions at 200 GeV, we show that for protons and antiprotons there exists a scaling distribution independent of the colliding centrality. The scaling functions can also describe data from BRAHMS for both proton and antiproton spectra at y=2.2 and 3.2. The scaling behaviors are shown to be incompatible with the usual string fragmentation scenario for particle production.

• OSTI ID: 21067835
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 76; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANTIPROTONS
BROOKHAVEN RHIC
COLLIDING BEAMS
DISTRIBUTION
ENERGY SPECTRA
GEV RANGE
GOLD 197 REACTIONS
GOLD 197 TARGET
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
SCALING LAWS
STRING MODELS
TRANSVERSE MOMENTUM