Quark Orbital Angular Momentum in the MIT Bag Model

Details Quark Orbital Angular Momentum in the MIT Bag Model Quark Orbital Angular Momentum in the MIT Bag Model

2010-11-04

arxiv.org/abs/1011.1041v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages

Scientific paper

Using the MIT bag model, we study the contribution from the gluon vector potential due to the spectators to the orbital angular momentum of a quark in the bag model. For $\alpha_s = {\cal O}(1)$, this spectator contribution to the quark orbital angular momentum in the gauge-covariant Ji decomposition is of the same order as the non gauge-covariant quark orbital angular momentum and its magnitude is larger for $d$ than for $u$ quarks and negative for both.

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