2006/07/31 by Wei Liu, W. Liu, Che Ming Ko +2 · 4 citations
Physics and Astronomy · #Gluon #High-Energy Particle Collisions Research #Jet (fluid) #Nuclear physics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Plasma #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #Quark–gluon plasma #nucl-th
paper · pdf · doi:10.1103/physrevc.75.051901
published as Phys.Rev.C75:051901,2007 · version to appear in PRC
openalex publication_date 2007/05/04 · arxiv created 2007/05/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Quark and gluon jets traversing through a quark-gluon plasma not only lose their energies but also can undergo flavor conversions. The conversion rates via the elastic q(q)g\ensuremath→gq(q) and the inelastic qq\ensuremath↔gg scatterings are evaluated in the lowest order in QCD. Including both jet energy loss and conversions in the expanding quark-gluon plasma produced in relativistic heavy ion collisions, we have found a net of quark jets to gluon jets. This reduces the difference between the nuclear modification factors for quark and gluon jets in central heavy ion collisions and thus enhances the p/\ensuremathπ+ and p/\ensuremathπ^\ensuremath- ratios at high transverse momentum. However, a much larger net quark-to-gluon jet conversion rate than the one given by the lowest order QCD is needed to account for the observed similar ratios in central Au+Au and p+p collisions at the same energy. Implications of our results are discussed.