2010/03/22 by Li-Hua Song, Chun-Gui Duan · 1 citation
Physics and Astronomy · #Deep inelastic scattering #EMC effect #Hadron #Hadronization #High-Energy Particle Collisions Research #Inelastic scattering #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Scattering #hep-ph
paper · pdf · doi:10.1103/physrevc.81.035207
published as Physical Review C 81, 035207 (2010)
openalex publication_date 2010/03/22 · arxiv created 2011/09/25 · arxiv updated 2011/09/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Semi-inclusive deep inelastic scattering on nuclear targets is an ideal tool to study the energy loss effect of an outgoing quark in a nuclear medium. By means of the short hadron formation time, the experimental data with quark hadronization occurring outside the nucleus are picked out. A leading-order analysis is performed for the hadron multiplicity ratios as a function of the energy fraction on helium, neon, and copper nuclei relative to deuteron for the various identified hadrons. It is shown that the nuclear effects on parton distribution functions can be neglected. It is found that the theoretical results considering the nuclear modification of fragmentation functions due to quark energy loss are in good agreement with the experimental data. Whether the quark energy loss is linear or quadratic with the path length is not determined. The obtained energy loss per unit length is 0.38\ifmmode±\else\textpm\fi0.03 GeV/fm for an outgoing quark by the global fit.