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Relativistic constituent quark model of electroweak properties of baryons

1993; American Physical Society; Volume: 47; Issue: 9 Linguagem: Inglês

10.1103/physrevd.47.4114

1538-4500

Felix Schlumpf,

High-Energy Particle Collisions Research

We calculate the electroweak properties of nucleons and hyperons in a relativistic constituent quark model using the light-front formalism. The parameters of the model, namely, the constituent quark mass and the confinement scale, can be uniquely chosen for both the electromagnetic and weak experimental data. A consistent physical picture of the $\mathrm{qqq}$ system appears in this work with a symmetric nucleon wave function and an asymmetric hyperon wave function. Only for the strangeness-changing weak decays do we need nontrivial form factors of the constituent quark.