QCD Collisional Energy Loss Reexamined

2006/05/29 by A. Peshier · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1103/physrevlett.97.212301

published as Phys.Rev.Lett. 97 (2006) 212301 · 2 figures

arxiv created 2006/05/29 · openalex publication_date 2006/11/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

It is shown that at a large temperature and E\ensuremath→\ensuremath∞ the QCD collisional energy loss reads dE/dx\ensuremath∼\ensuremathα(m_D²)T². Compared to previous approaches, which led to dE^B/dx\ensuremath∼\ensuremathα²T²ln(ET/m_D²) similar to the Bethe-Bloch formula in QED, we take into account the running of the strong coupling. As one significant consequence, due to asymptotic freedom, dE/dx becomes E independent for large parton energies. Some implications with regard to heavy ion collisions are pointed out.

Citations

• Radiative energy loss of high energy quarks and gluons in a finite volume quark-gluon plasma
• Classical Electrodynamics

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