Spin of ground state baryons

Abstract

We calculate the quark spin contribution to the total angular momentum of flavor octet and flavor decuplet ground state baryons using a spin-flavor symmetry based parametrization method of quantum chromodynamics. We find that third order SU(6) symmetry breaking three-quark operators are necessary to explain the experimental result Sigma_1=0.32(10). For spin 3/2 decuplet baryons we predict that the quark spin contribution is Sigma_3=3.93(22), i.e. considerably larger than their total angular momentum.

8 pages

References in corpus (9)

• Interplay of Spin and Orbital Angular Momentum in the Proton
• Resolution of the Proton Spin Problem
• Quadrupole moments of baryons
• Evidence for the Absence of Gluon Orbital Angular Momentum in the Nucleon
• The role of orbital angular momentum in the proton spin
• Phenomenological analysis of the nucleon spin contents and their scale dependence
• Spin and orbital angular momentum of the proton
• Axial exchange currents and nucleon spin
• Orbital Angular Momentum in the Nucleon

Cited by in corpus (8)

• Magnetic Moments of Octet Baryons in Hot and Dense Nuclear Matter
• Axial-vector form factors for the low lying octet baryons in the chiral quark constituent model
• Nucleon structure functions and longitudinal spin asymmetries in the chiral quark constituent model
• Properties of JP = 1/2+ baryon octets at low energy
• Electromagnetic multipole moments of baryons
• Three quark currents and baryon spin
• Ernest Henley and the shape of baryons
• The quark orbital angular momentum of ground state octet baryons