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Hadronization in heavy ion collisions: Recombination and fragmentation of partons

Jan, 2003

4 pages

Published in:

Phys.Rev.Lett. 90 (2003) 202303

e-Print:

nucl-th/0301087 [nucl-th]

DOI:

10.1103/PhysRevLett.90.202303

Report number:

DUKE-TH-03-233

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Abstract:

We argue that the emission of hadrons with transverse momentum up to about 5 GeV/c in central relativistic heavy ion collisions is dominated by recombination, rather than fragmentation of partons. This mechanism provides a natural explanation for the observed constant baryon-to-meson ratio of about one and the apparent lack of a nuclear suppression of the baryon yield in this momentum range. Fragmentation becomes dominant at higher transverse momentum, but the transition point is delayed by the energy loss of fast partons in dense matter.

scattering: heavy ion
gold
hadron: emission
transverse momentum: spectrum
quark: fragmentation
quark: recombination
baryon: yield
meson: yield
numerical calculations: interpretation of experiments

References(33)

Figures(0)

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