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Strong nucleon and Δ-isobar form factors in the quark-confinement model

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Abstract

The nucleon and the Δ-isobar are investigated as three-quark systems in the quark-confinement model (QCM). This model is based on two hypotheses. First, quark confinement is accomplished through averaging over some vacuum gluon fields which are assumed to provide the confinement of any colour states. Second, hadrons are treated as collective colourless excitations of quark-gluon interactions.

The QCM is applied to low-energy baryon physics. The nucleon magnetic moments and electromagnetic radii, the ratioG A /G V , and the decay width for Δ →pπ are calculated. The behaviour of the electromagnetic and strong mesonnucleon (meson-isobar) form factors is determined for space-like momentum transfers. The results are compared with experimental data for the electromagnetic form factors and phenomenological strong form factors as used in the Bonn potential.

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Authors and Affiliations

  1. Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Head Post Office Box 79, SU-101 000, Moscow, USSR

    G. V. Efimov, M. A. Ivanov & V. E. Lubovitskij

Authors
  1. G. V. Efimov
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  2. M. A. Ivanov
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  3. V. E. Lubovitskij
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Efimov, G.V., Ivanov, M.A. & Lubovitskij, V.E. Strong nucleon and Δ-isobar form factors in the quark-confinement model. Few-Body Systems 6, 17–43 (1989). https://doi.org/10.1007/BF01076281

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  • DOI: https://doi.org/10.1007/BF01076281

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