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Positive-parity excited baryons in a quark model with hyperfine interactions

Nathan Isgur*

Gabriel Karl†

  • Department of Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, England

  • Theory Division, Rutherford Laboratory, Chilton, Didcot, Oxon OX11 OQX, England

  • *Present and permanent address: Department of Physics, University of Toronto, Toronto, Canada M5S 1A7.
  • †Present and permanent address: Department of Physics, University of Guelph, Guelph, Canada N1G 2W1.
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Phys. Rev. D 19, 2653 – Published 1 May, 1979Erratum Phys. Rev. D 23, 817 (1981)

DOI: https://doi.org/10.1103/PhysRevD.19.2653

Abstract

A quark model suggested by quantum chromodynamics with strong spin-dependent forces of magnetic-dipole-magnetic-dipole character perturbing a flavor-independent confinement potential is applied to lowlying positive-parity excited baryons. SU(3) is broken only by quark masses, and this leads to a new choice of basis states in the hyperon sector; couplings to K¯N are especially transparent in this basis. The results, which are largely determined by previous analyses, are in good agreement with the known properties of these states. Spin-orbit forces are once again found to be negligible.

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Erratum

Erratum: Positive-parity excited baryons in a quark model with hyperfine interactions

Nathan Isgur and Gabriel Karl
Phys. Rev. D 23, 817 (1981)

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Outline

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Phys. Rev. D 19, 2653– Published 1 May, 1979
  • Received 11 August 1978

© 1979 American Physical Society

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