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Baryon decays in a quark model with chromodynamics

Roman Koniuk and Nathan Isgur

  • Department of Physics, University of Toronto, Toronto, Canada M5S 1A7

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Phys. Rev. D 21, 1868 – Published 1 April, 1980Erratum Phys. Rev. D 23, 818 (1981)

DOI: https://doi.org/10.1103/PhysRevD.21.1868

Abstract

Quark models of hadrons are tested in a very limited way when only their spectroscopy is compared with experiment; at least equally important tests arise from examining the predicted internal structure of the hadrons via analysis of their decay amplitudes. We present here a compilation of one of the most extensive calculations of baryon amplitudes to date, encompassing the pseudoscalar and photon couplings of the states associated with up to two orbital or one radial excitation in the nonrelativistic quark model. These amplitudes are then combined with the baryon compositions predicted by a quark model incorporating some of the features expected to arise from quantum chromodynamics. The result is to generate a set of baryon amplitudes which (1) resolve the problem of "missing" resonances by essentially decoupling a very large number of states from partial-wave analyses and (2) leave those resonances which remain in remarkable correspondence to the observed states in both their masses and decay amplitudes.

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Erratum

Erratum: Baryon decays in a quark model with chromodynamics

Roman Koniuk and Nathan Isgur
Phys. Rev. D 23, 818 (1981)

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Phys. Rev. D 21, 1868– Published 1 April, 1980
  • Received 6 December 1979

© 1980 American Physical Society

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