A Comparison between Relativistic and Semi-Relativistic Treatment in the Diquark-Quark Model

Simple item page
dc.creatorOettel, M.
dc.creatorAlkofer, R.
dc.date2000-01-25
dc.date2000-05-16
dc.date.accessioned2026-07-07T11:08:59Z
dc.date.available2026-07-07T11:08:59Z
dc.descriptionIn the diquark-quark model of the nucleon including scalar and axialvector diquarks we compare solutions of the ladder Bethe-Salpeter equation in the instantaneous Salpeter approximation and in the fully covariant (i.e. four-dimensional) treatment. We obtain that the binding energy is severly underestimated in the Salpeter approximation. For the electromagnetic form factors of the nucleon we find that in both approaches the overall shapes of the respective form factors are reasonably similar up to $Q^2 \approx 0.4$ GeV^2. However, the magnetic moments differ substantially as well as results for the pion-nucleon and the axial coupling of the nucleon.
dc.description12 pages,4 figures, 3 tables; minor modifications in text and tables, references added, version to be published in Physics Letters B
dc.identifierhttps://arxiv.org/abs/hep-ph/0001261
dc.identifierhttp://arxiv.org/abs/hep-ph/0001261
dc.identifierPhys.Lett.B484:243-250,2000
dc.identifierdoi:10.1016/S0370-2693(00)00657-2
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190323
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleA Comparison between Relativistic and Semi-Relativistic Treatment in the Diquark-Quark Model
dc.typetext

Files

Collections

arXiv