2003/04/23 by Johan Bijnens, Elvira Gamiz, Elvira Gámiz +2 · 6 citations
Physics and Astronomy · #Class (philosophy) #Hadron #High-Energy Particle Collisions Research #Meson #Particle physics theoretical and experimental studies #Perturbative QCD #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #Resummation #hep-ph
paper · pdf · doi:10.1088/1126-6708/2003/04/055
published as JHEP 0304 (2003) 055 · 27 pages
arxiv created 2003/04/23 · openalex publication_date 2003/04/29 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
This paper discusses a general class of ladder resummation inspired hadronic approximations. It is found that this approach naturally reproduces many successes of single meson per channel saturation models (e.g. VMD) and NJL based models. In particular the existence of a constituent quark mass and a gap equation follows naturally. We construct an approximation that satisfies a large set of QCD short-distance and large Nc constraints and reproduces many hadronic observables. We show how there exists in general a problem between QCD short-distance constraints for Green Functions and those for form factors and cross-sections following from the quark-counting rule. This problem while expected for Green functions that do not vanish in purely perturbative QCD also persists for many Green functions that are order parameters.