Quark Orbital Angular Momentum in the Baryon

Details Quark Orbital Angular Momentum in the Baryon Quark Orbital Angular Momentum in the Baryon

2000-12-21

arxiv.org/abs/hep-ph/0012295v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pages, 3 figures, revised version with minor eq. no and ref. no. corrections. Discussion on the $\Lambda$ spin and a new re

Scientific paper

10.1142/S0217751X01005018

Analytical and numerical results, for the orbital and spin content carried by different quark flavors in the baryons, are given in the chiral quark model with symmetry breaking. The reduction of the quark spin, due to the spin dilution in the chiral splitting processes, is transferred into the orbital motion of quarks and antiquarks. The orbital angular momentum for each quark flavor in the proton as a function of the partition factor $\kappa$ and the chiral splitting probability $a$ is shown. The cancellation between the spin and orbital contributions in the spin sum rule and in the baryon magnetic moments is discussed.

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