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17 papers · 2 filters
Electromagnetic baryon form factors in the Poincare-covariant Faddeev approach
Reinhard Alkofer, Gernot Eichmann, Helios Sanchis-Alepuz +1
Baryons are treated as three-quark systems using QCD degrees of freedom in Poincare-covariant bound-state equations. The quark self-energy as well as the interaction between quarks…
within the Generalized Parton Picture
Stefan Kofler, Peter Kroll, Wolfgang Schweiger
We investigate the reaction within the generalized parton picture. The process is described by a handbag-type mechanism with the charm-quark mas…
Hadronic bound-states in SU(2) from Dyson--Schwinger Equations
Milan Vujinovic, Richard Williams
By using the Dyson-Schwinger/Bethe-Salpeter formalism in Euclidean spacetime, we calculate the ground state spectrum of hadrons in an SU(2) gauge theory with 2 fundamenta…
Vertex functions of Coulomb gauge Yang--Mills theory
Markus Q. Huber, Davide R. Campagnari, Hugo Reinhardt
The canonical recursive Dyson--Schwinger equations for the three-gluon and ghost-gluon vertices are solved numerically. The employed truncation includes several previously neglecte…
Semileptonic meson decays in point-form relativistic quantum mechanics: unambiguous extraction of weak form factors
Maria Gomez-Rocha
The point-form version of the Bakamjian-Thomas construction is applied to the description of several semileptonic decays of mesons. Weak form factors are extracted without ambiguit…
Spectra of heavy quarkonia in a Bethe-Salpeter-equation approach
Thomas Hilger, Carina Popovici, Maria Gomez-Rocha +1
In a covariant Bethe-Salpeter-equation approach and with a rainbow-ladder truncated model of QCD, we investigate the use of an effective interaction with the goal of reproducing QC…