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

2008/03/28 by Yang Li
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1088/0954-3899/35/10/104051

published as J.Phys.G35:104051,2008 · 4 pages, 2 figure; Contribution to Quark Matter 2008 in Jaipur, India; submitted to J. Phys. G

arxiv created 2008/03/28 · openalex publication_date 2008/09/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We argue that the collinear factorization of the fragmentation functions in high energy nuclear collisions breaks down at transverse momenta p_T \lesssim 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.

Citations

• Review of Particle Physics