Pionic and hidden-color, six-quark contributions to the deuteron b1 structure function

[摘要] The b1deep-inelastic structure function is an observable feature of a spin-1 system that is sensitive to non-nucleonic components of the target nuclear wave function. The contributions of exchanged pions in the deuteron are estimated and found to be of measurable size for values of x of about 0.1. A simple model for a hidden-color, six-quark configuration (with only about 0.15% probability to exist in the deuteron) is proposed and found to give substantial contributions for values of x greater than about 0.2. Good agreement with the only existing (HERMES) data is obtained. Predictions are made for an upcoming JLab experiment. The Close and Kumano sum rule is investigated and found to be a useful guide to understanding various possible effects that may contribute.

[发布机构] University of Washington, Seattle; WA; 98195, United States^1

[关键词] Inelastic structure;Nuclear wave functions;Simple modeling;Structure functions;Sum rule