Parton dynamics of the MIT bag model

Abstract

The formalism of field theory quantized on the light-plane is used to develop a parton interpretation of the glueless, cavity approximation to the MIT bag model. The resulting parton model is sufficiently well defined to allow the calculation of valence quark-parton distributions. The x dependence of the transverse momentum ( k T) distributions is derived. The general features of the distributions are discussed. The shortcomings of the approximations used are explained, and we are able to resolve some outstanding difficulties of deep inelastic scattering off a cavity. The relevance of the transverse-momentum distributions to the interpretation of a variety of recent and future experiments is reviewed, and the relation of our calculated distributions to the values extracted phenomenologically is discussed. The field-theoretic framework of the model is invoked for a critique of previous attempts at the calculation of parton k T distributions.