Quark Orbital Angular Momentum in the MIT Bag Model

2010/11/04 by Matthias Burkardt, Burkardt, Matthias, Abdullah Jarrah +1
Physics and Astronomy · #Pulsars and Gravitational Waves Research #Quantum Chromodynamics and Particle Interactions #Black Holes and Theoretical Physics

paper · pdf · doi:10.48550/arxiv.1011.1041

Abstract

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 α_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.

Related

• The angular momentum decomposition in the scalar diquark model
• Aspects of Quark Orbital Angular Momentum
• TMDs in the bag model
• Models for TMDs and numerical methods
• Identification of Observables for Quark and Gluon Orbital Angular Momentum