Hadronization in heavy-ion collisions

doi:10.1088/0954-3899/30/1/025

Hadronization in heavy-ion collisions: recombination or fragmentation?

R J Fries et al 2004 J. Phys. G: Nucl. Part. Phys. 30 S223-S228 doi: 10.1088/0954-3899/30/1/025

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R J Fries¹, B Müller¹, C Nonaka¹ and S A Bass^1,2
¹ Physics Department, Duke University, PO Box 90305, Durham, NC 27708, USA
² RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, NY 11973, USA
E-mail: rjfries@phy.duke.edu

Abstract. We show that hadron production in relativistic heavy-ion collisions at transverse momenta larger than 2 GeV/c can be explained by the competition of two different hadronization mechanisms. Above 5 GeV/c hadron production can be described by fragmentation of partons that are created perturbatively. Below 5 GeV/c recombination of partons from the dense and hot fireball dominates. This can explain some of the surprising features of RHIC data such as the constant baryon-to-meson ratio of about one and the small nuclear suppression for baryons between 2 to 4 GeV/c.

Print publication: Issue 1 (January 2004)
Received 27 May 2003
Published 11 December 2003

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Hadronization in heavy-ion collisions: recombination or fragmentation?

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