Meson exchange and nucleon polarizabilities in the quark model

Abstract

Modifications to the nucleon electric polarizability induced by pion and sigma exchange in the q-q potentials are studied by means of sum rule techniques within a non-relativistic quark model. Contributions from meson exchange interactions are found to be small and in general reduce the quark core polarizability for a number of hybrid and one-boson-exchange q-q models. These results can be explained by the constraints that the baryonic spectrum impose on the short range behavior of the mesonic interactions.

11 pages, 1 figure added, expanded discussion

References in corpus (6)

• Exchange Current Contributions to the Charge Radii of the Nucleons
• Nucleon form factors in a chiral constituent-quark model
• Electric polarizability of nuclei from a longitudinal sum rule
• Electric polarizability of nuclei and a longitudinal sum rule
• The $\pi -$Gluon Exchange Interaction Between Constituent Quarks
• Quark contribution to the nucleon polarizabilities and three-body forces

Cited by in corpus (2)

• Spin force dependence of the parton distributions: the ratio $F_2^n(x,Q^2)/F_2^p(x,Q^2)$
• Electromagnetic Form Factors of the Nucleon in a Relativistic Quark Pair Creation Model