Hadronization at Rhic: Interplay of Recombination and Fragmentation

  • S. A. Bass
  • R. J. Fries
  • C. Nonaka
Conference paper
Part of the NATO Science Series book series (NAII, volume 166)

Abstract

We discuss hadron production in heavy ion collisions at RHIC. We argue that hadrons at transverse momenta P T < 5 GeV are formed by recombination of partons from the dense parton phase created in central collisions at RHIC. We provide a theoretical description of the recombination process for P T > 2 GeV. Below P T = 2 GeV our results smoothly match a purely statistical description. At hightransverse momentum hadron production is well describedin the language of perturbative QCD by the fragmentation of partons. We give numerical results for a variety of hadron spectra, ratios and nuclear suppression factors. We also discuss the anisotropic flow v 2 and give results based on a flow in the parton phase. Our results are consistent with the existence of a parton phase at RHIC hadronizing at a temperature of 175 MeV and a radial flow velocity of 0.55c.

Keywords

Anisotropy Recombination Dinates Schiff Verse 

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Copyright information

© Springer Science+Business Media Dordrecht 2004

Authors and Affiliations

  • S. A. Bass
    • 1
    • 2
  • R. J. Fries
    • 3
  • C. Nonaka
    • 1
  1. 1.Department of PhysicsDuke UniversityDurhamUSA
  2. 2.Brookhaven National LaboratoryRIKEN BNL Research CenterUptonUSA
  3. 3.Department of PhysicsUniversity of MinnesotaMinneapolisUSA

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