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Path-integral hadronization for the nucleon and its interactions

L. J. Abu-Raddad·A. Hosaka·D. Ebert·H. Toki
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Abstract

Nucleon structure and the origin and nature of the nuclear force are investigated in the context of a QCD-based effective field theory and the path-integral method of hadronization. We start from a microscopic model of quarks and diquarks where the gluons have been integrated out. In particular, we use the chiral Nambu-Jona-Lasinio model to describe quark dynamics and assume that the nucleon can be conceived as a quark-diquark relativistic bound state. The hadronization method is then used to rewrite the problem in terms of the physical meson and nucleon degrees of freedom. Next, by employing a loop and derivative expansion of the resulting quark/diquark determinants, we arrive at an effective chiral meson-nucleon Lagrangian. Nucleon properties such as mass, coupling constants, electromagnetic radii, anomalous magnetic moments, and form factors are derived using a theory of at most two free parameters.

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L. J. Abu-Raddad, A. Hosaka, D. Ebert, H. Toki. 2002-06-03. Path-integral hadronization for the nucleon and its interactions. https://doi.org/10.1103/physrevc.66.025206

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