6533b7d6fe1ef96bd1267214

RESEARCH PRODUCT

Relativistic constituent quark model with infrared confinement

Tanja BranzJürgen G. KörnerAmand FaesslerThomas GutscheValery E. LyubovitskijMikhail A. Ivanov

subject

QuarkPhysicsNuclear and High Energy PhysicsParticle physicsMeson010308 nuclear & particles physicsQuark modelHadronNuclear TheoryConstituent quarkFOS: Physical sciencesOmega baryon01 natural sciencesHigh Energy Physics - PhenomenologyPionHigh Energy Physics - Phenomenology (hep-ph)Quantum electrodynamics0103 physical sciencesHigh Energy Physics::ExperimentColor confinement010306 general physics

description

We refine the relativistic constituent quark model developed in our previous papers to include the confinement of quarks. It is done, first, by introducing the scale integration in the space of alpha-parameters, and, second, by cutting this scale integration on the upper limit which corresponds to an infrared cutoff. In this manner one removes all possible thresholds presented in the initial quark diagram. The cutoff parameter is taken to be the same for all physical processes. We adjust other model parameters by fitting the calculated quantities of the basic physical processes to available experimental data. As an application, we calculate the electromagnetic form factors of the pion and the transition form factors of the omega and eta Dalitz decays.

https://dx.doi.org/10.48550/arxiv.0912.3710