Spectator-model operators in point-form relativistic quantum mechanics

Abstract

We address the construction of transition operators for electromagnetic, weak, and hadronic reactions of relativistic few-quark systems along the spectator model. While the problem is of relevance for all forms of relativistic quantum mechanics, we specifically adhere to the point form, since it preserves the spectator character of the corresponding transition operators in any reference frame. The conditions imposed on the construction of point-form spectator-model operators are discussed and their implications are exemplified for mesonic decays of baryon resonances within a relativistic constituent quark model.

10 pages, 4 figures, updated version accepted for publication in Europ. Phys. J. A

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Cited by in corpus (20)

• Nucleon electromagnetic form factors
• Strange and nonstrange baryon spectra in the relativistic interacting quark-diquark model with a Gürsey and Radicati-inspired exchange interaction
• Quark-Model Identification of Baryon Ground and Resonant States
• Electromagnetic nucleon form factors in instant and point form
• Electromagnetic Form Factors and the Hypercentral CQM
• Relativistic interactions for the meson-two-nucleon system in the clothed-particle unitary representation
• Axial charges of octet and decuplet baryons
• Structure of meson-baryon interaction vertices
• Relativistic quark-diquark model of baryons with a spin-isospin transition interaction
• Electroweak form factors of heavy-light mesons -- a relativistic point-form approach
• Electromagnetic meson form factor from a relativistic coupled-channel approach
• Covariant calculation of nonstrange decays of strange baryon resonances
• Covariant calculation of strange decays of baryon resonances
• Axial charges of the nucleon and N* resonances
• Nucleon-nucleon wave function with short-range nodes and high-energy deuteron photodisintegration
• Electromagnetic Properties of Few-Body Systems Within a Point-Form Approach
• Understanding entangled spins in QED
• Baryon resonances and strong decays
• Flavor analysis of nucleon, $\Delta$, and hyperon electromagnetic form factors
• Quenching of the Deuteron in Flight