2009/11/06 by V. Palli, C. Ciofi degli Atti, L. P. Kaptari +4 · 2 citations
Physics and Astronomy · #Deep inelastic scattering #Diquark #Hadronization #High-Energy Particle Collisions Research #Inelastic scattering #Nuclear physics #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quark #Recoil #Scattering #Strong interaction #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.80.054610
published as Phys.Rev.C80:054610,2009 · 35 pages, 12 figures, accepted for pubblication in Phys. Rev. C
arxiv created 2009/11/06 · openalex publication_date 2009/11/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The effects of the final-state interaction in slow-proton production in semi-inclusive deep inelastic scattering processes off nuclei, A(e,e'p)X, are investigated in detail using the spectator and target-fragmentation mechanisms. In the former mechanism, a hard interaction on a nucleon of a correlated pair leads, by recoil, to the emission of the partner nucleon, whereas in the latter mechanism a proton is produced when the diquark, which is formed right after the \ensuremathγ*-quark interaction, captures a quark from the vacuum. Unlike previous papers on the subject, particular attention is paid to the effects of the final-state interaction of the hadronizing quark with the nuclear medium using an approach based on an effective time-dependent cross section that combines the soft and hard parts of hadronization dynamics in terms of the string model and perturbative QCD, respectively. It is shown that the final-state interaction of the hadronizing quark with the medium plays a relevant role in both deuterons and complex nuclei. Nonetheless, kinematical regions where final-state interaction effects are minimized can be selected experimentally, which would allow one to investigate the structure functions of nucleons embedded in the nuclear medium. Likewise, regions where the interaction of the struck hadronizing quark with the nuclear medium is maximized can be found, which would make it possible to study nonperturbative hadronization mechanisms.