The nucleon wave function in light-front dynamics

Abstract

The general spin structure of the relativistic nucleon wave function in the $3q$-model is found. It contains 16 spin components, in contrast to 8 ones known previously, since in a many-body system the parity conservation does not reduce the number of the components. The explicitly covariant form of the wave function automatically takes into account the relativistic spin rotations, without introducing any Melosh rotation matrices. It also reduces the calculations to the standard routine of the Dirac matrices and of the trace techniques. In examples of the proton magnetic moment and of the axial nucleon form factor, with a particular wave function, we reproduce the results of the standard approach. Calculations beyond the standard assumptions give different results.

35 pages, Latex, Submitted to Nucl. Phys. A

References in corpus (3)

• Explicitly Covariant Light-Front Dynamics and Relativistic Few-Body Systems
• Melosh rotation: source of the proton's missing spin
• Relativistic Spin-Flavor States in Light Front Dynamics

Cited by in corpus (10)

• Nucleon mass from a covariant three-quark Faddeev equation
• Three-Quark Light-Cone Amplitudes of The Proton And Quark-Orbital-Motion Dependent Observables
• The covariant structure of light-front wave functions and the behavior of hadronic form factors
• Bethe-Salpeter approach with the separable interaction for the deuteron
• Strange Asymmetries in the Nucleon Sea
• Nonperturbative calculation of the anomalous magnetic moment in the Yukawa model within truncated Fock space
• Vector mesons in a relativistic point-form approach
• Semileptonic meson decays in point-form relativistic quantum mechanics: unambiguous extraction of weak form factors
• Nonperturbative renormalization in light-front dynamics and applications
• Three-Fermion Bound States on the Light Front