Baryon enhancement in high-density QCD and relativistic heavy ion collisions

Yang Li

doi:10.1088/0954-3899/35/10/104051

Baryon enhancement in high-density QCD and relativistic heavy ion collisions

Yang Li

Mathematics & Statistics

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Abstract

We argue that the collinear factorization of the fragmentation functions in high-energy nuclear collisions breaks down at transverse momenta p_T ≲ Q_s/g due to high parton densities in the colliding hadrons and/or nuclei. We find that gluon recombination dominates in that p_T region. We calculate the inclusive cross section for π meson and nucleon production using the low-energy theorems for the scale anomaly in QCD, and compare our quantitative baryon-to-meson ratio to the RHIC data.

Original language	English (US)
Article number	104051
Journal	Journal of Physics G: Nuclear and Particle Physics
Volume	35
Issue number	10
DOIs	https://doi.org/10.1088/0954-3899/35/10/104051
State	Published - Oct 1 2008

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10.1088/0954-3899/35/10/104051

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Baryon enhancement in high-density QCD and relativistic heavy ion collisions

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