6533b862fe1ef96bd12c62b5
RESEARCH PRODUCT
Quark model predictions for the SU(6)-breaking ratio of the proton momentum distributions
Marc VanderhaeghenElena SantopintoA. VassalloMauro Gianninisubject
PhysicsQuarkNuclear and High Energy PhysicsParticle physicsNuclear TheoryProtonMagnetic momentParton distributionsNuclear TheoryQuark modelFOS: Physical sciencesConstituent quarkOrder (ring theory)Constituent quark modelsHadronsNuclear Theory (nucl-th)MomentumSU(6)Partonsdescription
The ratio between the anomalous magnetic moments of proton and neutron has been recently parametrized by the ratio of proton momentum fractions $M_{2}^{q_{val}}$. This ratio is evaluated using different constituent quark models, starting from the CQM density distributions and calculating the next-to leading order distributions. We show that this momentum fractions $M_{2}^{q_{val}}$ ratio is a sensitive test for SU(6)-breaking effects and therefore it is useful to distinguish among different CQMs. We investigate also the possibility of getting constraints on the formulation of quark structure models.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-01-01 | Physics Letters B |