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

Yang Li

Research output: Contribution to journalArticlepeer-review

Abstract

We argue that the collinear factorization of the fragmentation functions in high-energy nuclear collisions breaks down at transverse momenta pT ≲ Qs/g due to high parton densities in the colliding hadrons and/or nuclei. We find that gluon recombination dominates in that pT 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 languageEnglish (US)
Article number104051
JournalJournal of Physics G: Nuclear and Particle Physics
Volume35
Issue number10
DOIs
StatePublished - Oct 1 2008

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