1993/06/01 by R. Jakob, P. Kroll, M. Schuermann +2 · 3 citations
Physics and Astronomy · #Baryon #Black Holes and Theoretical Physics #Covariant transformation #Diquark #Form factor (electronics) #Hyperon #Magnetic form factor #Nuclear physics #Nucleon #Octet #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quark #Quark model #Wave function #hep-ph
paper · pdf · doi:10.1007/bf01284677
published as Z.Phys. A347 (1993) 109-116 · 16 pages, WU-B 93-07, latex, uuencoded postscript files of 7 figures appended at the end of the latex file
openalex publication_date 1993/06/01 · arxiv created 1993/10/05 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present an alternative parameterization of the quark-diquark model of baryons which particularly takes care of the most recent proton electric form-factor data from the E136 experiment at SLAC. In addition to electromagnetic form factors of the nucleon, for which good agreement with data is achieved, we discuss the weak axial vector form factor of the nucleon as well as electromagnetic form factors of Λ and Σ hyperons. Technical advance in calculating the pertinent analytic expressions within perturbative quantum chromodynamics is gained by formulating the wave function of the quark-diquark system in a covariant way. Finally, we also comment on the influence of Sudakov corrections within the scope of the diquark model.